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.

Q: 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

A: yes
****
Q: Context: @cnni I hope the families of the victims get the truth and finally closure #Westgate6Months— Ruthie Ruthie (@808Ruthie) March 17, 2014 Question: how powerful was the napa earthquake? Answer: 6.1

A: no
****
Q: Context: Uh oh! Dad showed up. No more fun anymore. ;-) @KelseyGrammer @twitter— William Shatner (@WilliamShatner) July 1, 2014 Question: what cannot occur now? Answer: fun

A:
yes
****