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: animal 
Words: trap, dog, fish, tiger, horse
answer:
trap


question:
Category: fried food 
Words: sweet roll, seperate, fritter, dunker, dumpling
answer:
seperate


question:
Category: geographical property 
Words: smooth, flat, hill, plain, mansion
answer:

mansion