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.

Example Input: Context: Today there were terror attacks in Turkey, Switzerland and Germany - and it is only getting worse. The civilized world must change thinking!— Donald J. Trump (@realDonaldTrump) December 19, 2016 Question: who is being congratulated by riz? Answer: all the nominees
Example Output: no

Example 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.
Example Output: no

Example Input: Context: I was getting tired so I laid down on the stairs!!! # Sean Diddy Combs (@diddy) May 2, 2017 Question: why did he lay down on the stairs? Answer: getting tired
Example Output:
yes