Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

[Q]: mad, beautiful, comfortable, fine, relaxed
[A]: beautiful

[Q]: egret, mallet, tackle, davit, crane
[A]: tackle

[Q]: hand, finger, foot, knee, centimeter
[A]:
centimeter