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.

Ex Input:
Context: Following Monday's Russian #doping allegations, do you still have trust in track and field?— CNN Sport (@cnnsport) November 10, 2015 Question: how many hours was the lucky woman stuck in the 5th floor building? Answer: 36 hours

Ex Output:
no


Ex Input:
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.

Ex Output:
yes


Ex Input:
Context: #SF waits with giant anticipation for return of World Champ #SFGiants to celebrate as one City with parade down Market Street on Friday!— Edwin Lee (@mayoredlee) October 30, 2014 Question: what day is the giants' parade? Answer: friday

Ex Output:

yes