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.

Q: 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.

A: yes
****
Q: Context: Oops, Bradlee! Can hear Ben yelling now, "You White House clowns never get it right!" What a wonderful man. David Gergen (@David_Gergen) October 22, 2014 Question: who is yelling now? Answer: ben

A: yes
****
Q: Context: RealGM @RealGMWolves, Pistons Discuss Ricky Rubio For Reggie Jackson Trade: 2D , 2:31:15 AM Question: which players are considered being traded? Answer: ricky rubio for reggie jackson

A:
yes
****