QUESTION: answer this: who did jeff green play for in the nba??

ANS: Cleveland Cavaliers
input: What is the answer to this question? who won season 1 of drag race all stars?

output: Chad Michaels
In: what type of rock makes up the grand canyon??

Out: sedimentary rock
Please answer this: who won the hundred metre final race in the world athletics championship?

Justin Gatlin
Q: Answer this question:

who won us open women's singles 2017??

A: Sloane Stephens
Question: intelligent question answering machine which beat jeopardy quiz champions?

Answer:
the Watson computer system