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

O: ham, D: aluminum foil, and U: pelican. You press <<U>>.
O: trailer, D: first-aid kit, and U: road sign. You press <<D>>.
O: mint, D: strainer, and U: step stool. You press <<U>>.
O: pocket watch, D: marijuana, and U: steak. You press <<O>>.
O: rollerblade, D: springboard, and U: spaghetti. You press <<U>>.
O: daisy, D: shopping basket, and U: deodorant. You press <<O>>.
O: wineglass, D: grate, and U: horn. You press <<D>>.
O: cannon, D: scaffold, and U: lens. You press <<U>>.
O: kettle, D: roller, and U: boulder. You press <<U>>.
O: rust, D: jump rope, and U: butterfly. You press <<U>>.
O: box, D: turntable, and U: hot-water bottle. You press <<D>>.
O: calzone, D: shoelace, and U: vegetable. You press <<D>>.
O: cash register, D: chopsticks, and U: gun. You press <<O>>.
O: wok, D: water cooler, and U: urinal. You press <<O>>.
O: cake, D: printer, and U: door. You press <<U>>.
O: paint, D: shoehorn, and U: pumpkin. You press <<D>>.
O: sweeper, D: hook, and U: dashboard. You press <<U>>.
O: strainer, D: mint, and U: step stool. You press <<U>>.
O: sprinkler, D: piggy bank, and U: whisk. You press <<U>>.
O: corset, D: tag, and U: trapdoor. You press <<U>>.