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: Godspeed to the heroic Iraqi forces, Kurdish #Peshmerga, and #Ninewa volunteers. We are proud to stand with you in this historic operation.— Brett McGurk (@brett_mcgurk) October 16, 2016 Question: who is mcgurk proud of? Answer: iraqui forces.
Example Output: yes

Example Input: Context: History is made! #MontrealProtocol countries agree to curb powerful greenhouse gases in largest climate breakthrough since Paris. 🌍🌎🌏 UN Environment (@UNEP) October 15, 2016 Question: what did @montrealprotocol countries agree to? Answer: curb greenhouse gases
Example Output: yes

Example Input: Context: SIGN OF THE (END?) TIMES I call B.S. No way could that weasel ride on that woodpecker's back. Not without a saddle. Walter Burton (@thewalterb) March 3, 2015 Question: what is the weasel riding on? Answer: the woodpecker's back
Example Output:
yes