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: weather 
Words: 70, endure, decent, cold, fair
answer:
decent


question:
Category: construction 
Words: excavator, steam roller, concrete pourer, swallow, crane
answer:
swallow


question:
Category: bird 
Words: derrick, tackle, crane, swift, hoist
answer:

hoist