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: secretary duty 
Words: schedule, file, answer calls, correspondence, ram

SOLUTION: ram

PROBLEM: Category: guitar part 
Words: truss rod, fret, neck, bored, strap lock

SOLUTION: bored

PROBLEM: Category: animal 
Words: eagle, beetle, spider, wave, fly

SOLUTION:
wave