You will be presented with triplets of objects, which will be assigned to the keys X, R, and G.
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.

X: cherry, R: train, and G: periscope. You press <<X>>.
X: toaster, R: gargoyle, and G: granola. You press <<R>>.
X: pliers, R: go-kart, and G: wedding cake. You press <<G>>.
X: groundhog, R: man, and G: meerkat. You press <<R>>.
X: underwear, R: electric chair, and G: man. You press <<R>>.
X: bucket, R: oar, and G: air conditioner. You press <<R>>.
X: seal, R: bottle, and G: scanner. You press <<X>>.
X: mirror, R: kiwi, and G: cigar. You press <<X>>.
X: shaker, R: inkwell, and G: thorn. You press <<G>>.
X: pitcher, R: vending machine, and G: sarcophagus. You press <<R>>.
X: kneepad, R: goalpost, and G: gravy. You press <<G>>.
X: matchbox, R: wire, and G: scallop. You press <<G>>.
X: hat, R: slingshot, and G: boar. You press <<G>>.
X: perfume, R: potholder, and G: sloth. You press <<G>>.
X: rope, R: soldering iron, and G: sandpaper. You press <<G>>.
X: cornucopia, R: toga, and G: dress. You press <<X>>.
X: totem pole, R: mouth, and G: board. You press <<R>>.
X: comb, R: centrifuge, and G: banana peel. You press <<R>>.
X: trapdoor, R: pill, and G: game. You press <<X>>.
X: cherry, R: periscope, and G: train. You press <<X>>.