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: bird 
Words: crane, concrete pourer, goose, hoist, duck
answer:
concrete pourer


question:
Category: mode of transportation 
Words: spider, fly, train, jog, car
answer:
spider


question:
Category: bird 
Words: egret, flamingo, winch, hoist, crane
answer:

hoist