Definition: 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: Context: What. A. Match. #Nadal survives an onslaught from world No.112 Tim Smyczek to prevail 6-2 3-6 6-7(2) 6-3 7-5 #ausopen Australian Open (@AustralianOpen) January 21, 2015 Question: who won the match between nadal and smyczek? Answer: nadal
Output:
yes