instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: type of sandwich 
Words: grilled cheese, french toast, outing, burger, club
answer:
outing


question:
Category: ocean 
Words: up to the moment, tide, current, jetstream, brine
answer:
up to the moment


question:
Category: boats 
Words: deck, call, galley, bridge, stern
answer:

call