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: @SamuelLJackson: Keep fighting and Stay Strong Strat! You can do it! #CapForStrat — Samuel L. Jackson (@SamuelLJackson) May 14, 2014 Question: who does jackson encourage? Answer: strat.

Ex Output:
yes


Ex Input:
Context: Last ever appearance at Old Trafford as a Manchester United player? Ryan Giggs brings himself on with 20 mins to go Mark Pougatch (@markpougatch) May 6, 2014 Question: how would you describe fashion week look no.17? Answer: gambia noir.

Ex Output:
no


Ex Input:
Context: New on #WWKD: The Duchess of Cambridge Opens New Art Room at Barlby Primary School What Would Kate Do (@WWKD_Official) January 15, 2015 Question: where did the duchess open a new art room? Answer: barlby primary school

Ex Output:

yes