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: Tough day to fly to, from or through DFW. 30% of flights have been canceled already. Fog then to Ice. chad myers (@chadmyerscnn) March 4, 2015 Question: what percentage of flights is canceled? Answer: 30 percent.

yes