You will be presented with triplets of objects, which will be assigned to the keys O, P, and I.
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: bug, P: lamppost, and I: straw. You press <<O>>.
O: matchbox, P: ladle, and I: walrus. You press <<I>>.
O: compost, P: chocolate, and I: file. You press <<P>>.
O: machine gun, P: dress, and I: dumbwaiter. You press <<O>>.
O: moss, P: paintbrush, and I: blinder. You press <<P>>.
O: lemonade, P: polar bear, and I: duct tape. You press <<I>>.
O: cigarette butt, P: propeller, and I: brussels sprouts. You press <<I>>.
O: sweater, P: soldering iron, and I: clay. You press <<I>>.
O: seaplane, P: panther, and I: baby. You press <<O>>.
O: cake, P: sling, and I: domino. You press <<O>>.
O: butter, P: perfume, and I: fishing pole. You press <<I>>.
O: headrest, P: lollipop, and I: candle. You press <<O>>.
O: stingray, P: mushroom, and I: clarinet. You press <<O>>.
O: triangle, P: ankle, and I: cupcake. You press <<I>>.
O: bunkbed, P: coffee bean, and I: tackle. You press <<P>>.
O: top hat, P: sorbet, and I: grill. You press <<O>>.
O: soda, P: exerciser, and I: yo-yo. You press <<O>>.
O: horn, P: christmas tree, and I: rolling pin. You press <<O>>.
O: pencil, P: keyboard, and I: rosary. You press <<O>>.
O: blanket, P: thermometer, and I: sidecar. You press <<I>>.