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: fair, pale, 70, clime, tangle

A: pale
****
Q: grasshopper, fly, walk, bus, eagle

A: bus
****
Q: dog, swim, hike, hiking, fish

A:
dog
****