You will be presented with triplets of objects, which will be assigned to the keys E, O, and R.
In each trial, please indicate which object you think is the odd one out by pressing the corresponding key.
In other words, please choose the object that is the least similar to the other two.

E: yolk, O: harness, and R: noodle. You press <<O>>.
E: drawer, O: carriage, and R: brake. You press <<E>>.
E: football, O: eggplant, and R: ear. You press <<R>>.
E: television, O: fencepost, and R: go-kart. You press <<R>>.
E: fountain pen, O: coffee bean, and R: badge. You press <<O>>.
E: tarp, O: sponge, and R: sausage. You press <<E>>.
E: binder, O: bolt, and R: duck. You press <<R>>.
E: loom, O: gopher, and R: bracelet. You press <<E>>.
E: ink, O: glue, and R: electric chair. You press <<R>>.
E: turtleneck, O: drawer, and R: steamroller. You press <<R>>.
E: beanbag, O: ratchet, and R: espresso. You press <<O>>.
E: washboard, O: safety pin, and R: pencil. You press <<E>>.
E: melon, O: road sign, and R: plastic film. You press <<O>>.
E: kaleidoscope, O: coffee pot, and R: tuba. You press <<O>>.
E: mashed potato, O: brake, and R: beehive. You press <<O>>.
E: chalk, O: penlight, and R: pesto. You press <<O>>.
E: egg roll, O: train car, and R: headlamp. You press <<O>>.
E: can opener, O: shaving cream, and R: moose. You press <<E>>.
E: cufflink, O: crowbar, and R: stomach. You press <<R>>.
E: backgammon, O: okra, and R: stalagmite. You press <<E>>.
E: lantern, O: nacho, and R: measuring cup. You press <<E>>.
E: ski, O: sonogram, and R: typewriter. You press <<E>>.
E: puck, O: towel, and R: pincushion. You press <<E>>.
E: juice, O: staple gun, and R: taillight. You press <<R>>.
E: radish, O: memory stick, and R: pliers. You press <<R>>.
E: pudding, O: sewage, and R: bobsled. You press <<E>>.
E: orchid, O: battery, and R: ankle. You press <<O>>.
E: mandolin, O: car door, and R: peg. You press <<O>>.
E: megaphone, O: stomach, and R: woman. You press <<E>>.
E: cannon, O: shorts, and R: seafood. You press <<R>>.
E: turtle, O: springboard, and R: turntable. You press <<O>>.
E: seismograph, O: brooch, and R: jack. You press <<R>>.
E: altar, O: pickle, and R: wallet. You press <<R>>.
E: skateboard, O: gavel, and R: pulley. You press <<E>>.
E: pajamas, O: milkshake, and R: fan. You press <<R>>.
E: detonator, O: cactus, and R: guinea pig. You press <<E>>.
E: bathrobe, O: typewriter, and R: sling. You press <<O>>.
E: cookie, O: skin, and R: sequin. You press <<O>>.
E: cruise ship, O: tamale, and R: maggot. You press <<E>>.
E: clover, O: gumdrop, and R: suitcase. You press <<R>>.
E: tweezers, O: dart, and R: arrow. You press <<E>>.
E: hotdog, O: pallet, and R: juice. You press <<O>>.
E: train set, O: shaving cream, and R: dish. You press <<E>>.
E: riser, O: thorn, and R: salami. You press <<E>>.
E: flower, O: brooch, and R: generator. You press <<R>>.
E: float, O: groundhog, and R: kebab. You press <<E>>.
E: hay, O: otter, and R: headphones. You press <<R>>.
E: stained glass, O: bazooka, and R: golf cart. You press <<E>>.
E: jeep, O: pill, and R: pony. You press <<O>>.
E: sundae, O: crane, and R: stove. You press <<O>>.
E: bus, O: diaper, and R: trigger. You press <<E>>.
E: lid, O: photograph, and R: razor blade. You press <<E>>.
E: shopping basket, O: braid, and R: hash. You press <<E>>.
E: engine, O: crystal, and R: coffee bean. You press <<R>>.
E: tank, O: bag, and R: cauliflower. You press <<E>>.
E: shoulder, O: handcuff, and R: container. You press <<R>>.
E: eel, O: pencil, and R: comb. You press <<E>>.
E: bookmark, O: eyepiece, and R: earplug. You press <<E>>.
E: chipmunk, O: windsock, and R: anteater. You press <<O>>.
E: table, O: camper, and R: tape measure. You press <<O>>.
E: spring roll, O: chisel, and R: film. You press <<O>>.
E: cap, O: stove, and R: heater. You press <<E>>.
E: leek, O: aardvark, and R: boot. You press <<R>>.
E: blueberry, O: gyro, and R: match. You press <<R>>.
E: hat, O: pine tree, and R: wick. You press <<E>>.
E: shower, O: backgammon, and R: paper plate. You press <<E>>.
E: tongs, O: yogurt, and R: seismograph. You press <<R>>.
E: ladybug, O: sauce, and R: mistletoe. You press <<O>>.
E: cellphone, O: bucket, and R: vest. You press <<O>>.
E: lip gloss, O: faucet, and R: projector. You press <<R>>.
E: springboard, O: anteater, and R: detonator. You press <<R>>.
E: antenna, O: stained glass, and R: barbell. You press <<O>>.
E: oyster, O: mousse, and R: ukulele. You press <<R>>.
E: stake, O: monkey, and R: lampshade. You press <<R>>.
E: knot, O: buggy, and R: dessert. You press <<E>>.
E: napkin ring, O: cheesecake, and R: punch. You press <<E>>.
E: shell, O: fur coat, and R: saffron. You press <<E>>.
E: tattoo, O: football helmet, and R: cornhusk. You press <<R>>.
E: cereal, O: clove, and R: bedpost. You press <<R>>.
E: doghouse, O: drumstick, and R: confetti. You press <<E>>.
E: mail, O: silicone, and R: rhubarb. You press <<E>>.
E: leek, O: backpack, and R: diskette. You press <<O>>.
E: cleat, O: shell, and R: ski. You press <<E>>.
E: coleslaw, O: ship, and R: backgammon. You press <<R>>.
E: fingerprint, O: sea urchin, and R: ice-cream cone. You press <<R>>.
E: sunflower, O: waffle, and R: money. You press <<E>>.
E: gutter, O: hand, and R: cardinal. You press <<E>>.
E: ice, O: wig, and R: chopsticks. You press <<R>>.
E: ginger, O: lamb, and R: jacket. You press <<R>>.
E: altar, O: tractor, and R: milk. You press <<O>>.
E: kebab, O: stingray, and R: bowler hat. You press <<R>>.
E: mast, O: garter, and R: hula hoop. You press <<O>>.
E: leek, O: kale, and R: ski pole. You press <<E>>.
E: record, O: tricycle, and R: beet. You press <<R>>.
E: grape, O: blinder, and R: sewing kit. You press <<E>>.
E: rattlesnake, O: turbine, and R: board. You press <<O>>.
E: mouse, O: finger, and R: gas mask. You press <<R>>.
E: desk, O: red carpet, and R: station wagon. You press <<O>>.
E: trunk, O: duck, and R: nest. You press <<E>>.
E: whale, O: leggings, and R: pedometer. You press <<R>>.
E: trapdoor, O: cheesecake, and R: macaroni. You press <<E>>.
E: olive, O: clothesline, and R: flashbulb. You press <<R>>.
E: chime, O: screw, and R: deer. You press <<O>>.
E: stingray, O: polo shirt, and R: paper bag. You press <<E>>.
E: potpie, O: velcro, and R: moose. You press <<O>>.
E: straw, O: fire hydrant, and R: twig. You press <<O>>.
E: birthday cake, O: petal, and R: tripod. You press <<R>>.
E: stretcher, O: seahorse, and R: step stool. You press <<R>>.
E: shark, O: gourd, and R: tulip. You press <<E>>.
E: paper bag, O: strainer, and R: tugboat. You press <<E>>.
E: headdress, O: patch, and R: drink. You press <<O>>.
E: stamp, O: vise, and R: keyhole. You press <<E>>.
E: antelope, O: bandanna, and R: seed. You press <<O>>.
E: crystal, O: locker, and R: headscarf. You press <<O>>.
E: lightning bug, O: spareribs, and R: spacesuit. You press <<R>>.
E: confetti, O: seagull, and R: tree trunk. You press <<O>>.
E: kazoo, O: fencepost, and R: bell. You press <<R>>.
E: cookie, O: satellite dish, and R: viewfinder. You press <<R>>.
E: computer, O: ramp, and R: wasp. You press <<E>>.
E: chinchilla, O: spring roll, and R: waffle iron. You press <<R>>.
E: window, O: baby, and R: radio. You press <<E>>.
E: sweet potato, O: piecrust, and R: curb. You press <<R>>.
E: cucumber, O: boomerang, and R: kiwi. You press <<O>>.
E: microwave, O: candy, and R: oar. You press <<R>>.
E: mussel, O: kilt, and R: peanut. You press <<R>>.
E: urn, O: melon, and R: apple. You press <<E>>.
E: hose, O: treadmill, and R: cigarette holder. You press <<R>>.
E: computer, O: pumpkin, and R: rust. You press <<E>>.
E: puppet, O: saucer, and R: totem pole. You press <<R>>.
E: toucan, O: rickshaw, and R: walker. You press <<E>>.
E: filter, O: cordon bleu, and R: dumpster. You press <<O>>.
E: wrist, O: leg, and R: juicer. You press <<R>>.
E: icepick, O: cockroach, and R: petal. You press <<R>>.
E: step stool, O: sandpaper, and R: car. You press <<R>>.
E: snowplow, O: buoy, and R: squash. You press <<O>>.
E: rollerblade, O: seal, and R: wax paper. You press <<E>>.
E: hovercraft, O: train car, and R: checkers. You press <<R>>.
E: cantaloupe, O: puddle, and R: strap. You press <<R>>.
E: sauce, O: honey, and R: hole. You press <<R>>.
E: motorcycle, O: file, and R: cockroach. You press <<E>>.
E: hummus, O: loincloth, and R: broccoli. You press <<O>>.
E: nightshirt, O: broom, and R: beer. You press <<O>>.
E: icemaker, O: papaya, and R: taxi. You press <<R>>.
E: air mattress, O: drink, and R: beaver. You press <<E>>.
E: cap, O: folder, and R: seagull. You press <<O>>.
E: cement mixer, O: kazoo, and R: flan. You press <<E>>.
E: panda, O: tambourine, and R: cleat. You press <<E>>.
E: potato, O: power line, and R: beet. You press <<O>>.
E: printer, O: icepick, and R: taxi. You press <<R>>.
E: roadsweeper, O: gravestone, and R: lab coat. You press <<O>>.
E: scoreboard, O: charger, and R: handkerchief. You press <<R>>.
E: shirt, O: mouth, and R: basil. You press <<R>>.
E: wood, O: coconut, and R: handprint. You press <<R>>.
E: leaf, O: noodle, and R: marshmallow. You press <<E>>.
E: maple syrup, O: baklava, and R: sand. You press <<R>>.
E: skateboard, O: playing card, and R: cement mixer. You press <<O>>.
E: swing, O: volleyball, and R: bat. You press <<O>>.
E: mosquito net, O: seagull, and R: french horn. You press <<E>>.
E: scooter, O: maple syrup, and R: mulberry. You press <<E>>.
E: highlighter, O: folder, and R: weasel. You press <<O>>.
E: wire cutters, O: grapevine, and R: moccasin. You press <<O>>.
E: calf, O: skunk, and R: curling iron. You press <<E>>.
E: navel, O: shower curtain, and R: shopping cart. You press <<E>>.
E: machete, O: landmine, and R: pigeon. You press <<E>>.
E: basil, O: underwear, and R: panda. You press <<O>>.
E: box, O: toolbox, and R: drumstick. You press <<E>>.
E: suitcase, O: antelope, and R: ski. You press <<R>>.
E: rudder, O: cement mixer, and R: goat. You press <<E>>.
E: tugboat, O: gorilla, and R: mannequin. You press <<E>>.
E: baton, O: tongue, and R: box. You press <<R>>.
E: blazer, O: spatula, and R: fondue. You press <<R>>.
E: stump, O: necklace, and R: bowtie. You press <<E>>.
E: wreck, O: earwig, and R: donkey. You press <<E>>.
E: cleaver, O: crane, and R: brick. You press <<R>>.
E: snake, O: streetlight, and R: hairspray. You press <<R>>.
E: vent, O: casserole, and R: carrot. You press <<E>>.
E: roll, O: apron, and R: leopard. You press <<O>>.
E: hummingbird, O: cooker, and R: juicer. You press <<O>>.
E: desk, O: rope, and R: payphone. You press <<O>>.
E: chive, O: sauce, and R: bookmark. You press <<E>>.
E: bottle, O: icepick, and R: screw. You press <<E>>.
E: plate, O: shrimp, and R: turkey. You press <<E>>.
E: dice, O: ferry, and R: roof rack. You press <<E>>.
E: thumb, O: pudding, and R: sardine. You press <<E>>.
E: safety pin, O: belt, and R: bandanna. You press <<E>>.
E: gyroscope, O: hamburger, and R: balloon. You press <<R>>.
E: noose, O: eye patch, and R: peeler. You press <<O>>.
E: zipper, O: jukebox, and R: maple syrup. You press <<E>>.
E: jalapeno, O: beetle, and R: corkscrew. You press <<R>>.
E: blower, O: fungus, and R: swan. You press <<E>>.
E: lasagna, O: diamond, and R: speedometer. You press <<R>>.
E: cookie sheet, O: swimsuit, and R: canister. You press <<R>>.
E: lava, O: key, and R: broccoli. You press <<E>>.
E: moccasin, O: pelican, and R: crane. You press <<O>>.
E: lid, O: place mat, and R: envelope. You press <<O>>.
E: ice pack, O: mandolin, and R: fern. You press <<R>>.
E: recliner, O: kayak, and R: flask. You press <<E>>.
E: urn, O: fuse, and R: sticker. You press <<E>>.
E: lid, O: calculator, and R: pillbox. You press <<O>>.
E: pizza, O: aquarium, and R: peppermint. You press <<E>>.
E: telescope, O: flip flop, and R: stained glass. You press <<O>>.
E: footbath, O: badge, and R: umbrella. You press <<O>>.
E: zebra, O: cardboard, and R: lamb. You press <<O>>.
E: flamethrower, O: mongoose, and R: flower. You press <<E>>.
E: panther, O: suitcase, and R: hat. You press <<O>>.
E: straw, O: dartboard, and R: donkey. You press <<O>>.
E: shopping cart, O: vent, and R: bee. You press <<O>>.
E: brick, O: tent, and R: puffin. You press <<E>>.
E: yogurt, O: clasp, and R: washcloth. You press <<O>>.
E: dip, O: chive, and R: microphone. You press <<R>>.
E: visor, O: trailer, and R: duster. You press <<O>>.
E: goose, O: heater, and R: boat. You press <<O>>.
E: owl, O: nail, and R: pinball. You press <<O>>.
E: candlestick, O: cushion, and R: shark. You press <<O>>.
E: sweatsuit, O: coop, and R: jigsaw puzzle. You press <<E>>.
E: cake mix, O: air conditioner, and R: caviar. You press <<O>>.
E: hamburger, O: corn, and R: blanket. You press <<R>>.
E: reel, O: cross, and R: shutter. You press <<O>>.
E: trapdoor, O: brass knuckles, and R: piggy bank. You press <<O>>.
E: cookie sheet, O: eclair, and R: coffee filter. You press <<E>>.
E: gramophone, O: beanie, and R: teddy bear. You press <<E>>.
E: fuse, O: jam, and R: harness. You press <<E>>.
E: sunflower, O: bolt, and R: card. You press <<R>>.
E: perfume, O: beer, and R: backgammon. You press <<R>>.
E: gate, O: tick, and R: hard disk. You press <<R>>.
E: rifle, O: goggles, and R: checkbook. You press <<O>>.
E: lanyard, O: canoe, and R: emerald. You press <<E>>.
E: stair, O: fork, and R: kite. You press <<R>>.
E: dough, O: breadbox, and R: spareribs. You press <<O>>.
E: highlighter, O: place mat, and R: match. You press <<R>>.
E: blindfold, O: grater, and R: diamond. You press <<O>>.
E: sling, O: t-shirt, and R: stair. You press <<O>>.
E: curling iron, O: jelly bean, and R: chessboard. You press <<E>>.
E: birdcage, O: beaver, and R: recorder. You press <<R>>.
E: baseball bat, O: washing machine, and R: lava. You press <<R>>.
E: rock, O: spider web, and R: parachute. You press <<O>>.
E: skirt, O: screw, and R: perfume. You press <<O>>.
E: frame, O: guinea pig, and R: mongoose. You press <<E>>.
E: chipmunk, O: roller coaster, and R: glass. You press <<E>>.
E: headrest, O: saw, and R: cake mix. You press <<O>>.
E: bathtub, O: checkbook, and R: elephant. You press <<E>>.
E: chips, O: porcupine, and R: braid. You press <<R>>.
E: grass, O: bed, and R: jacket. You press <<E>>.
E: sailboat, O: cereal, and R: dice. You press <<E>>.
E: cookie cutter, O: jersey, and R: dish. You press <<R>>.
E: flagpole, O: chocolate, and R: grapevine. You press <<E>>.
E: scorpion, O: pistachio, and R: vest. You press <<R>>.
E: shirt, O: orange, and R: orange rind. You press <<E>>.
E: mistletoe, O: chainsaw, and R: cape. You press <<O>>.
E: boa, O: tomato sauce, and R: shortbread. You press <<E>>.
E: melon, O: camera, and R: dip. You press <<O>>.
E: cardinal, O: centerpiece, and R: basil. You press <<O>>.
E: ice cream, O: moss, and R: sleeping bag. You press <<O>>.
E: jumpsuit, O: coffee table, and R: stir fry. You press <<O>>.
E: vase, O: candy, and R: jump rope. You press <<E>>.
E: root, O: microphone, and R: hearse. You press <<E>>.
E: dial, O: dishwashing liquid, and R: crystal. You press <<E>>.
E: thermometer, O: velcro, and R: eye. You press <<R>>.
E: vending machine, O: lens, and R: cellphone. You press <<E>>.
E: tablet, O: onion, and R: headscarf. You press <<E>>.
E: finger, O: stockings, and R: pan. You press <<R>>.
E: rice, O: ruby, and R: drawer. You press <<E>>.
E: cleat, O: cherry, and R: scaffolding. You press <<R>>.
E: flask, O: fire, and R: gramophone. You press <<O>>.
E: sunroof, O: pepper mill, and R: turban. You press <<E>>.
E: railing, O: cabbage, and R: totem pole. You press <<E>>.
E: noose, O: baklava, and R: sunflower. You press <<O>>.
E: chinaware, O: ironing board, and R: cigarette butt. You press <<R>>.
E: armor, O: onion, and R: sweeper. You press <<O>>.
E: blanket, O: string cheese, and R: parfait. You press <<E>>.
E: grater, O: paint, and R: tablecloth. You press <<R>>.
E: swing, O: iguana, and R: ratchet. You press <<R>>.
E: rice, O: car seat, and R: eclair. You press <<O>>.
E: eye, O: magnifying glass, and R: ladybug. You press <<R>>.
E: possum, O: smoothie, and R: incubator. You press <<E>>.
E: clasp, O: glass, and R: coffee table. You press <<E>>.
E: trapdoor, O: slug, and R: stick. You press <<E>>.
E: telephone pole, O: car door, and R: backdrop. You press <<E>>.
E: hawk, O: rooster, and R: spacesuit. You press <<R>>.
E: granite, O: neck, and R: football. You press <<R>>.
E: locket, O: ruby, and R: figurine. You press <<R>>.
E: easel, O: gem, and R: kite. You press <<E>>.
E: cauliflower, O: rack, and R: spider web. You press <<O>>.
E: coffee pot, O: forklift, and R: bouquet. You press <<R>>.
E: harp, O: cardboard, and R: wafer. You press <<E>>.
E: backscratcher, O: sand, and R: tupperware. You press <<O>>.
E: daisy, O: saddle, and R: rosary. You press <<O>>.
E: drill, O: power line, and R: spam. You press <<O>>.
E: camera, O: branch, and R: gem. You press <<E>>.
E: hood, O: hourglass, and R: wax paper. You press <<E>>.
E: calculator, O: paper, and R: chime. You press <<R>>.
E: toothbrush, O: ear, and R: harmonica. You press <<R>>.
E: bike, O: combination lock, and R: sandwich. You press <<O>>.
E: aircraft carrier, O: smoke alarm, and R: jukebox. You press <<E>>.
E: toothbrush, O: mask, and R: pig. You press <<O>>.
E: loincloth, O: swan, and R: cutting board. You press <<E>>.
E: shoe polish, O: boxer shorts, and R: ticktacktoe. You press <<R>>.
E: beet, O: dollhouse, and R: inhaler. You press <<O>>.
E: bell pepper, O: vase, and R: flamingo. You press <<O>>.
E: cuckoo clock, O: coconut, and R: banner. You press <<E>>.
E: tulip, O: typewriter, and R: swing set. You press <<O>>.
E: honeypot, O: clothesline, and R: walker. You press <<O>>.
E: caterpillar, O: cart, and R: doorhandle. You press <<O>>.
E: doormat, O: bug, and R: kangaroo. You press <<E>>.
E: candy cane, O: grape, and R: chaps. You press <<R>>.
E: bone, O: headscarf, and R: jewel. You press <<R>>.
E: vase, O: soda, and R: belt buckle. You press <<R>>.
E: cork, O: headlamp, and R: washcloth. You press <<O>>.
E: gingerbread man, O: lingerie, and R: leaf. You press <<R>>.
E: bulletin board, O: boa, and R: air pump. You press <<E>>.
E: leaf, O: hookah, and R: trough. You press <<E>>.
E: gopher, O: veil, and R: fireplace. You press <<R>>.
E: walker, O: ashtray, and R: octopus. You press <<R>>.
E: gourd, O: lavender, and R: rifle. You press <<R>>.
E: cleat, O: leopard, and R: scalpel. You press <<O>>.
E: dough, O: teepee, and R: overalls. You press <<O>>.
E: goblet, O: clothes, and R: cassette. You press <<O>>.
E: cash machine, O: broom, and R: jelly bean. You press <<E>>.
E: clock, O: footrest, and R: chimney. You press <<O>>.
E: llama, O: jack, and R: faucet. You press <<E>>.
E: chaps, O: playpen, and R: sledgehammer. You press <<E>>.
E: motherboard, O: wheat, and R: cross. You press <<E>>.
E: bungee, O: dragonfly, and R: pillow. You press <<R>>.
E: envelope, O: wine cooler, and R: quad. You press <<E>>.
E: peanut butter, O: seed, and R: rat. You press <<R>>.
E: stuffing, O: purse, and R: ear. You press <<R>>.
E: coffee, O: squid, and R: silicone. You press <<R>>.
E: seaweed, O: propeller, and R: ice cream. You press <<O>>.
E: rock, O: stamp, and R: lollipop. You press <<E>>.
E: sandbox, O: paintbrush, and R: bunkbed. You press <<O>>.
E: steering wheel, O: piglet, and R: sawhorse. You press <<O>>.
E: wafer, O: pine tree, and R: pantsuit. You press <<O>>.
E: espresso, O: kebab, and R: bow. You press <<R>>.
E: lime, O: corn, and R: macaroni. You press <<O>>.
E: sand, O: seatbelt, and R: gyro. You press <<O>>.
E: pin, O: bat, and R: vegetable. You press <<E>>.
E: kale, O: handprint, and R: clipper. You press <<R>>.
E: chicken wire, O: pineapple, and R: headrest. You press <<E>>.
E: sticker, O: soda fountain, and R: pigeon. You press <<E>>.
E: skunk, O: brass knuckles, and R: table. You press <<R>>.
E: perfume, O: maple syrup, and R: olive. You press <<R>>.
E: mask, O: coffee filter, and R: tupperware. You press <<E>>.
E: computer, O: torpedo, and R: mouse. You press <<E>>.
E: knot, O: icicle, and R: tomato. You press <<E>>.
E: bologna, O: snowplow, and R: windshield. You press <<E>>.
E: tackle, O: sandbox, and R: remote control. You press <<R>>.
E: joystick, O: golf club, and R: bush. You press <<E>>.
E: knitting, O: grapefruit, and R: bedpost. You press <<R>>.
E: plant, O: hay, and R: firecracker. You press <<E>>.
E: roulette wheel, O: paint, and R: skateboard. You press <<R>>.
E: kitten, O: contact lens, and R: sewing machine. You press <<R>>.
E: revolver, O: pipe, and R: kneepad. You press <<E>>.
E: blind, O: pepper mill, and R: laser pointer. You press <<E>>.
E: boxing gloves, O: paintbrush, and R: cucumber. You press <<E>>.
E: tricycle, O: jeans, and R: place mat. You press <<E>>.
E: target, O: computer screen, and R: mantle. You press <<O>>.
E: cable, O: station wagon, and R: mouse. You press <<E>>.
E: walker, O: mouse, and R: pogo stick. You press <<R>>.
E: wine, O: wing, and R: paint. You press <<O>>.
E: eggbeater, O: tuning fork, and R: battery. You press <<E>>.