In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.

Ex Input:
Context: Cheers to @Letterman. A king, a king-maker, and probably the man most to blame for inflicting me on America. See you soon. Ricky Gervais (@rickygervais) April 3, 2014 Question: who sent michelle obama a letter? Answer: beyonce

Ex Output:
no

Ex Input:
Context: A5: Look at your projections. If they show you are better off selling, then sell. Hold out if it shows there are better offers. #CNNAfrica Gossy Ukanwoke (@gossyomega) January 14, 2015 Question: what is the tweeter watching? Answer: the vice presidential debate

Ex Output:
no

Ex Input:
Context: @HuffingtonPost @BuzzFeed @Gothamist just saw Jerry and George walking in to Tom's Restaurant Ali Phil (@ClubAliP) January 13, 2014 Question: who did the tweeter see on the street? Answer: jerry and george

Ex Output:
yes