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: . @championsleague These are Barça's 8 possible opponents in the quarter-finals. Which do you prefer? #UCLDraw #UCL FC Barcelona (@FCBarcelona) March 18, 2015 Question: how many possible opponents were there? Answer: 8

yes