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: Robert Kraft says he expects an apology from the NFL if investigation does not "definitively determine" the Patriots tampered w/footballs— Rachel Nichols (@Rachel__Nichols) January 27, 2015 Question: who posted this tweet? Answer: rachel nichols

yes