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: Why in this day in age do we rely on the physical recovery of black boxes? Flight data should be continuously streamed to the cloud #8501qs Jacob Rossi (@jacobrossi) December 29, 2014 Question: who had to break through the ice in lake michigan Answer: cutter hollyhock
Example Output: no

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: Because I now wear shorts under dresses in crowded bars after being groped and even penetrated by unseen hands. #YesAllWomen Laura (@LauraLikesWine) May 25, 2014 Question: why does she wear shorts? Answer: she was groped
Example Output:
yes