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: mode of transportation 
Words: beetle, fly, soar, bus, car
answer:
beetle


question:
Category: corporate 
Words: synergy, combined, concerted, resistant, firm
answer:
resistant


question:
Category: outdoor sport activity 
Words: canyoning, fish, bat, kayak, hunt
answer:

bat