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: 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: I apologize if I've offended anyone. The post was meant to be anti-racist with humour. I now understand that (...) Mario Balotelli (@FinallyMario) December 2, 2014 Question: who finds ferrell in the corner? Answer: hbarnes
Example Output: no

Example Input: Context: LeBron James left the meeting without committing to a deal with the Heat, league source tells Yahoo Sports.— Adrian Wojnarowski (@WojYahooNBA) July 9, 2014 Question: what is the tweet urging people to do on mother's day? Answer: give a gift to help needy refugee children.
Example Output:
no