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: outdoor sport activity 
Words: wrestle, fish, iguana, hiking, hunt
answer:
iguana


question:
Category: construction 
Words: windlass, crane, dump truck, pelican, digger
answer:
pelican


question:
Category: boxing terminology 
Words: canvas, blocking, deck, sail, corner
answer:

sail