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: One of the uncomfortable things I learned on my trip down the #endangeredriver. Irrigation caused this in the 1980s. John D. Sutter (@jdsutter) July 22, 2014 Question: what is john d. sutter focused on? Answer: endangered rivers

yes