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

O: gravy, F: hummingbird, and Z: fire alarm. You press <<O>>.
O: nail polish, F: man, and Z: garlic. You press <<F>>.
O: bologna, F: knee, and Z: kneepad. You press <<O>>.
O: crib, F: turbine, and Z: silicone. You press <<O>>.
O: fire alarm, F: duct tape, and Z: washing machine. You press <<F>>.
O: kangaroo, F: urinal, and Z: unicycle. You press <<F>>.
O: music box, F: scale, and Z: bandage. You press <<Z>>.
O: spoon, F: megaphone, and Z: pocket. You press <<O>>.
O: earwig, F: pot, and Z: bubble. You press <<F>>.
O: moose, F: robe, and Z: hard disk. You press <<Z>>.
O: fuse, F: timer, and Z: airbag. You press <<Z>>.
O: hovercraft, F: cashew, and Z: tiger. You press <<F>>.
O: blackberry, F: straightjacket, and Z: charcoal. You press <<F>>.
O: typewriter, F: pencil sharpener, and Z: football helmet. You press <<Z>>.
O: sardine, F: copier, and Z: tuning fork. You press <<O>>.
O: tile, F: fuse, and Z: bolo tie. You press <<O>>.
O: router, F: sled, and Z: dial. You press <<F>>.
O: hovercraft, F: straightjacket, and Z: chicken. You press <<O>>.
O: teapot, F: letter opener, and Z: mat. You press <<O>>.
O: spout, F: elephant, and Z: grass. You press <<Z>>.