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: AUTHORS 
Clue: In January 1999 this author issued a public statement reminding the world the third millennium really begins Jan. 1, 2001
answer:
arthur c. clarke


question:
Category: U.S. PRESIDENTS 
Clue: He was the last man elected president who had served as a U.S. Senator
answer:
richard m. nixon


question:
Category: FAMOUS QUOTES 
Clue: In 1946 in Missouri, Churchill said, "From Stettin... to Trieste," it "has descended across the continent"
answer:

an iron curtain