You will be presented with triplets of objects, which will be assigned to the keys N, I, 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.

N: rudder, I: toothpaste, and D: strawberry. You press <<N>>.
N: candlestick, I: screen, and D: trampoline. You press <<N>>.
N: boomerang, I: sea urchin, and D: crossbow. You press <<I>>.
N: mask, I: syringe, and D: food processor. You press <<N>>.
N: fly, I: rollerskate, and D: humvee. You press <<N>>.
N: tortilla, I: coffee bean, and D: helmet. You press <<D>>.
N: webcam, I: bedpost, and D: tarp. You press <<N>>.
N: fig, I: bug, and D: lumber. You press <<D>>.
N: waterwheel, I: boy, and D: soda. You press <<I>>.
N: towel rack, I: sail, and D: bagpipe. You press <<D>>.
N: saucer, I: calamari, and D: ready meal. You press <<N>>.
N: car door, I: camel, and D: badger. You press <<N>>.
N: rake, I: vent, and D: finger. You press <<I>>.
N: brass knuckles, I: kimono, and D: roller. You press <<I>>.
N: playpen, I: gazelle, and D: cheeseburger. You press <<D>>.
N: cruise ship, I: cookie sheet, and D: spool. You press <<N>>.
N: shell, I: playing card, and D: bulletin board. You press <<N>>.
N: scraper, I: peach, and D: chocolate. You press <<N>>.
N: toy, I: crab, and D: book. You press <<I>>.
N: grapefruit, I: peanut, and D: crystal. You press <<D>>.