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.

Input: Consider Input: Context: @cnni I hope the families of the victims get the truth and finally closure #Westgate6Months Ruthie Ruthie (@808Ruthie) March 17, 2014 Question: how powerful was the napa earthquake? Answer: 6.1

Output: no

Input: Consider Input: Context: PM: "I'm delighted by the news that the Duke & Duchess of Cambridge are expecting a baby. They will make wonderful parents." #royalbaby UK Prime Minister (@Number10gov) December 3, 2012 Question: is this clothing warmer or colder? Answer: warmer

Output: no

Input: Consider Input: Context: #Malala stands in solidarity with Nigerians & people around the world calling for action to #BringBackOurGirls Malala Fund (@MalalaFund) May 3, 2014 Question: who does malala stand with? Answer: nigerians
Output: yes