TASK DEFINITION: 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.
PROBLEM: Category: emotional status 
Words: fine, relaxed, comfortable, prime, content

SOLUTION: prime

PROBLEM: Category: emotional status 
Words: excited, content, item, disappointed, jealous

SOLUTION: item

PROBLEM: Category: animal 
Words: fly, bee, flutter, fish, bats

SOLUTION:
flutter