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


question:
Category: secretary duty 
Words: support, type, file, software, answer
answer:
software


question:
Category: type of sandwich 
Words: hamburger, club, community, roll, grilled cheese
answer:

community