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: Consider Input: Context: Nature does dams too. They are just sliiiightly smaller than the ones I saw upstream. #endangeredriver John D. Sutter (@jdsutter) June 23, 2014 Question: what situation is bahai in? Answer: in some kind of captivity.

Output: no


Input: Consider Input: Context: You can see the angry crowd grow around the pro-Officer Darren Wilson supporters in #Ferguson. Eliott C. McLaughlin (@EliottCNN) August 21, 2014 Question: where is this angry crowd? Answer: ferguson

Output: yes


Input: Consider Input: Context: Gen Mattis last week: "If we did not have NATO today, we would need to create it"Pres-Elect Trump today: "NATO is obsolete"— Ivo Daalder (@IvoHDaalder) January 16, 2017 Question: whose door was always knocked on? Answer: his granny's door


Output: no