TASK DEFINITION: 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.
PROBLEM: emotional upsets, pick, emotional state, fret, emotional supports

SOLUTION: pick

PROBLEM: rudder, bow, pack, crew, deck

SOLUTION: pack

PROBLEM: jetstream, history, tide, current, sea

SOLUTION:
history