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.
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Question: Context: With my big sister Rebecca. I truly have the most incredible family and I am forever grateful for them. Gina Rodriguez (@HereIsGina) January 8, 2017 Question: what is this person grateful for? Answer: family and friends support.

Answer: yes

Question: Context: Met some of you #nolefam's yesterday. Autograph for a smile, hehe I think this exchange was in my favor. Novak Djokovic (@DjokerNole) August 14, 2014 Question: what does he think was in his favor? Answer: the exchange of autographs for a smile.

Answer: yes

Question: Context: RELEASE: 19,252 emails from the US Democratic National Committee #Hillary2016 #FeelTheBern WikiLeaks (@wikileaks) July 23, 2016 Question: how many emails are being refereed to? Answer: 19252

Answer:
yes