You will be presented with triplets of objects, which will be assigned to the keys X, E, and U.
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: meatball, E: sickle, and U: wallet. You press <<X>>.
X: window, E: flashbulb, and U: measuring cup. You press <<E>>.
X: satellite, E: fox, and U: ice pack. You press <<E>>.
X: beard, E: air conditioner, and U: lettuce. You press <<E>>.
X: scallop, E: washing machine, and U: inkwell. You press <<X>>.
X: birdbath, E: mustache, and U: gong. You press <<E>>.
X: red carpet, E: penguin, and U: string cheese. You press <<E>>.
X: chest, E: stroller, and U: pincushion. You press <<X>>.
X: block, E: stingray, and U: mouse. You press <<E>>.
X: tie, E: sweet potato, and U: melon. You press <<X>>.
X: glove, E: pocketknife, and U: telephone pole. You press <<U>>.
X: crayon, E: peanut butter, and U: eyedropper. You press <<E>>.
X: playing card, E: wolf, and U: knob. You press <<E>>.
X: urinal, E: slot machine, and U: knitting needle. You press <<U>>.
X: parrot, E: wreath, and U: garter. You press <<X>>.
X: basketball hoop, E: raspberry, and U: teepee. You press <<E>>.
X: comb, E: duckling, and U: yogurt. You press <<X>>.
X: pincushion, E: poster, and U: stair. You press <<X>>.
X: stair, E: stilt, and U: cage. You press <<U>>.
X: chipmunk, E: bedpan, and U: fork. You press <<X>>.