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: Fmr. US Sec. of Homeland Security Michael Chertoff: Trump has had a "measured and inclusive approach" since election OutFrontCNN (@OutFrontCNN) November 19, 2016 Question: who is fmr. us sec. of homeland security? Answer: michael chertoff

yes