instruction:
You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
question:
Category: U.S. RIVERS 
Clue: The Falls of Saint Anthony stop this mighty river from being navigable north of St. Paul, Minnesota
answer:
the mississippi


question:
Category: MR. AND MRS. SMITH 
Clue: An annual festival in Sydney, Australia honors Maria Smith, the originator of this famous apple
answer:
the granny smith apple


question:
Category: VERSE CASE SCENARIO 
Clue: This 2-letter word is the title & first word of Kipling's poem that ends, "you'll be a man, my son!"
answer:

if