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: We can't destroy the competitiveness of our factories in order to prepare for nonexistent global warming. China is thrilled with us!— Donald J. Trump (@realDonaldTrump) November 5, 2012 Question: who is thrilled with us? Answer: china
Example Output: yes

Example Input: Context: Warmer gear, check! This thing hooks right onto the boat. Called a skirt #endangeredriver John D. Sutter (@jdsutter) July 4, 2014 Question: what is the thing that hooks on the boat called? Answer: a skirt
Example Output: yes

Example Input: Context: "Come on guys, don't be scared," say Croatian police waiting for migrants & refugees at Serbia-Croatia border Ivan Watson (@IvanCNN) September 16, 2015 Question: what issues does the author think are more important to march for? Answer: poverty, war, and homelessness
Example Output:
no