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

Z: gold, A: motorcycle, and D: hearse. You press <<Z>>.
Z: leech, A: gasket, and D: mouthpiece. You press <<A>>.
Z: headscarf, A: taillight, and D: screen. You press <<Z>>.
Z: scrabble, A: horn, and D: sidecar. You press <<Z>>.
Z: swordfish, A: sandal, and D: mattress. You press <<Z>>.
Z: headlight, A: polisher, and D: toilet. You press <<D>>.
Z: footprint, A: cucumber, and D: neck. You press <<A>>.
Z: doll, A: engine, and D: penholder. You press <<A>>.
Z: glue, A: flashlight, and D: hockey stick. You press <<Z>>.
Z: wetsuit, A: timer, and D: bread. You press <<Z>>.
Z: radar, A: phone booth, and D: weather vane. You press <<A>>.
Z: bowtie, A: roller, and D: plum. You press <<A>>.
Z: tuba, A: sock, and D: motorcycle. You press <<A>>.
Z: outfit, A: antenna, and D: saltshaker. You press <<A>>.
Z: wasp, A: dreidel, and D: raccoon. You press <<A>>.
Z: bathrobe, A: slingshot, and D: kneepad. You press <<A>>.
Z: ratchet, A: wooden leg, and D: water bottle. You press <<D>>.
Z: gutter, A: stained glass, and D: mouth. You press <<Z>>.
Z: goggles, A: yolk, and D: headrest. You press <<Z>>.
Z: tennis ball, A: mud, and D: light switch. You press <<A>>.