You will be presented with triplets of objects, which will be assigned to the keys Z, U, and X.
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: crystal, U: pinball, and X: mold. You press <<X>>.
Z: acorn, U: kite, and X: mold. You press <<U>>.
Z: tambourine, U: cornbread, and X: watch. You press <<U>>.
Z: grenade, U: scrambled egg, and X: gingerbread man. You press <<U>>.
Z: toothbrush, U: turkey, and X: racket. You press <<Z>>.
Z: valve, U: counter, and X: home plate. You press <<U>>.
Z: toe, U: gear, and X: fireworks. You press <<Z>>.
Z: pantsuit, U: ice cream, and X: catapult. You press <<U>>.
Z: weasel, U: rosary, and X: scorpion. You press <<Z>>.
Z: ring, U: guacamole, and X: brick. You press <<X>>.
Z: grapevine, U: nail polish, and X: gasket. You press <<Z>>.
Z: watering can, U: oil, and X: staple. You press <<X>>.
Z: boxing gloves, U: kneepad, and X: lion. You press <<Z>>.
Z: parrot, U: guinea pig, and X: compass. You press <<X>>.
Z: bok choy, U: camera lens, and X: sailboat. You press <<Z>>.
Z: spatula, U: cactus, and X: globe. You press <<Z>>.
Z: straw, U: snowboard, and X: squash. You press <<X>>.
Z: shaving cream, U: lion, and X: leash. You press <<X>>.
Z: origami, U: eye, and X: buckle. You press <<Z>>.
Z: straw, U: petal, and X: polaroid. You press <<U>>.