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

X: insole, F: totem pole, and E: smoke alarm. You press <<E>>.
X: hot-water bottle, F: book, and E: radiator. You press <<E>>.
X: crayfish, F: school bus, and E: desk. You press <<X>>.
X: neck, F: gravel, and E: antelope. You press <<F>>.
X: paper plate, F: closet, and E: swing set. You press <<E>>.
X: polisher, F: mug, and E: bark. You press <<E>>.
X: wax paper, F: crucifix, and E: bow. You press <<F>>.
X: stopwatch, F: jellyfish, and E: exhaust pipe. You press <<F>>.
X: pajamas, F: match, and E: frisbee. You press <<X>>.
X: toothpaste, F: knitting, and E: eyeliner. You press <<F>>.
X: pie, F: outfit, and E: chip. You press <<E>>.
X: blowfish, F: scarf, and E: ram. You press <<F>>.
X: diving board, F: grill, and E: mosquito net. You press <<X>>.
X: printer, F: lion, and E: dart. You press <<F>>.
X: shell, F: cage, and E: potato. You press <<F>>.
X: telegraph, F: hopscotch, and E: can. You press <<F>>.
X: school bus, F: desk, and E: crayfish. You press <<E>>.
X: toy, F: mattress, and E: bike. You press <<X>>.
X: dishwashing liquid, F: bowl, and E: terrarium. You press <<E>>.
X: fig, F: dish, and E: squash. You press <<F>>.