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.

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
yes

Context: (1 of 2) @HeathrowAirport just took my pumped breast milk away. 10 ounces. Gone. Not okay.— Alyssa Milano (@Alyssa_Milano) April 9, 2015 Question: how many ounces was taken? Answer: 10
yes

Context: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: how long was the deal supposed to last? Answer: it was a 4-year deal.

no