You will be presented with triplets of objects, which will be assigned to the keys W, Z, and A.
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.

W: steamroller, Z: arrow, and A: kneepad. You press <<Z>>.
W: yak, Z: first-aid kit, and A: whisk. You press <<A>>.
W: pajamas, Z: test tube, and A: birdbath. You press <<W>>.
W: bathmat, Z: handprint, and A: plum. You press <<A>>.
W: mussel, Z: nail polish, and A: roulette wheel. You press <<A>>.
W: metronome, Z: pepperoni, and A: bongo. You press <<Z>>.
W: buffet, Z: wolf, and A: oar. You press <<Z>>.
W: guinea pig, Z: match, and A: cloud. You press <<W>>.
W: faucet, Z: gum, and A: water heater. You press <<Z>>.
W: underwear, Z: donkey, and A: vulture. You press <<W>>.
W: insole, Z: slot, and A: gear. You press <<W>>.
W: hopscotch, Z: boxing gloves, and A: spring roll. You press <<W>>.
W: pony, Z: school bus, and A: mouthpiece. You press <<Z>>.
W: bandage, Z: radio, and A: confetti. You press <<W>>.
W: combination lock, Z: water bottle, and A: urn. You press <<Z>>.
W: snowshoe, Z: trophy, and A: granite. You press <<Z>>.
W: steamroller, Z: kneepad, and A: arrow. You press <<A>>.
W: sweet potato, Z: brownie, and A: donkey. You press <<A>>.
W: stapler, Z: caramel, and A: rocking horse. You press <<W>>.
W: bench, Z: toe, and A: drum. You press <<A>>.