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: 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: Senator Bob Corker "begged" me to endorse him for re-election in Tennessee. I said "NO" and he dropped out (said he could not win without...— Donald J. Trump (@realDonaldTrump) October 8, 2017 Question: what chat was this author partaking in? Answer: #cnnafrica
Example Output: no

Example Input: Context: Police react in aftermath of explosion #bostonmarathon #boylstonst (John Tlumacki photo) — Boston Globe Sports (@BGlobeSports) April 15, 2013 Question: what is the current condition of the royal highness and her child? Answer: they are doing good.
Example Output:
no