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.

Example Input: Context: .@HillaryClinton I think it's high time for a woman president. You will get my vote. Ron Carlivati (@carlivatiron) April 12, 2015 Question: what kind of president did the message call for? Answer: a woman president
Example Output: yes

Example Input: Context: Jessica Cheung, 36, has been at Mong Kok since last night. She said the anti-occupy crowd began approaching at noon Wilfred Chan (@wilfredchan) October 3, 2014 Question: what crowd began apporaching at noon Answer: the anti occupy crowd
Example Output: yes

Example Input: Context: This is an attack on our people. An attack on Orlando. An attack on Florida. An attack on America. An attack on all of us. Rick Scott (@FLGovScott) June 12, 2016 Question: who is this person talking about? Answer: our people, all of us
Example Output:
yes