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

N: fountain pen, X: helicopter, and W: stem. You press <<X>>.
N: deer, X: trapdoor, and W: cupcake. You press <<X>>.
N: wineglass, X: crowbar, and W: leech. You press <<N>>.
N: praying mantis, X: otter, and W: needle. You press <<W>>.
N: airbag, X: target, and W: teepee. You press <<N>>.
N: bubble wrap, X: stamp, and W: washing machine. You press <<X>>.
N: joystick, X: fireplace, and W: trough. You press <<N>>.
N: sailboat, X: wine, and W: nutcracker. You press <<X>>.
N: tostada, X: snowboard, and W: ferret. You press <<W>>.
N: mandolin, X: aquarium, and W: lectern. You press <<X>>.
N: spear, X: headrest, and W: cardboard. You press <<N>>.
N: pearl, X: filing cabinet, and W: flute. You press <<X>>.
N: corkscrew, X: fur coat, and W: ready meal. You press <<W>>.
N: mosquito, X: cabinet, and W: vial. You press <<X>>.
N: dishwashing liquid, X: air conditioner, and W: dolly. You press <<N>>.
N: clothesline, X: granola, and W: pogo stick. You press <<X>>.
N: rocking chair, X: mitten, and W: deodorant. You press <<N>>.
N: birthday cake, X: lasagna, and W: french horn. You press <<W>>.
N: violin, X: undershirt, and W: computer. You press <<X>>.
N: parfait, X: chessboard, and W: kayak. You press <<W>>.