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: Hey everybody, thanks for your concern. We're all safe & doing well in the Russian segment. Follow @Nasa for updates on @Space_Station today— Sam Cristoforetti (@AstroSamantha) January 14, 2015 Question: who balked on conditions? Answer: munchak
Example Output: no

Example Input: Context: Ed Werder @EdwerderespnYes, every cart has a Cowboys player's name on it. HOF players don't cost more. Seem to be randomly assigned , 8:24:38 PM Question: what does every cart have? Answer: cowboys players name on it
Example Output: yes

Example Input: Context: #P6 says no discrimination in sport. Believe in equality? Spread the word! 02 Robbie Rogers (@robbierogers) December 5, 2013 Question: what city is being destroyed? Answer: vanuatu
Example Output:
no