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: "So much of The Post is Ben," Mrs. Graham said in 1994, three years after Bradlee retired as editor. "He created it as we know it today."— Ed O'Keefe (@edatpost) October 21, 2014 Question: when did ben bradlee retire? Answer: 1991

yes