You will be presented with triplets of objects, which will be assigned to the keys M, K, and N.
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.

M: porthole, K: gift, and N: sand. You press <<K>>.
M: revolver, K: cereal, and N: cigar. You press <<K>>.
M: dustpan, K: lobster, and N: blackberry. You press <<M>>.
M: ping-pong table, K: inhaler, and N: laundry basket. You press <<K>>.
M: beanbag, K: matchbox, and N: ladder. You press <<M>>.
M: golf cart, K: paper towel, and N: windsock. You press <<M>>.
M: cardboard, K: fan, and N: fossil. You press <<N>>.
M: petri dish, K: sawhorse, and N: turf. You press <<K>>.
M: thumb, K: pendulum, and N: gopher. You press <<M>>.
M: walrus, K: squirt gun, and N: trophy. You press <<N>>.
M: can opener, K: poker, and N: lighter. You press <<N>>.
M: gem, K: kneepad, and N: peeler. You press <<K>>.
M: coffin, K: cord, and N: glass. You press <<N>>.
M: ink, K: stamp, and N: fox. You press <<N>>.
M: machete, K: coleslaw, and N: drain. You press <<N>>.
M: boxer shorts, K: bin, and N: olive. You press <<N>>.
M: doorknob, K: pincushion, and N: quill. You press <<M>>.
M: shower, K: hay, and N: graffiti. You press <<K>>.
M: veil, K: sundae, and N: rolling pin. You press <<N>>.
M: ski boots, K: pocket watch, and N: sprouts. You press <<M>>.