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: secretary duty 
Words: fax, program, file, make coffee, answer
answer:
program


question:
Category: kitchenware 
Words: metal, glass, knifer, dish, cup
answer:
metal


question:
Category: military rank 
Words: general, admiral, ubiquitous, fighter, sergeant
answer:

ubiquitous