In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

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

Context: just scored an exclusive w/ Sen. Cruz... he denies he was whipping against Boehner, defends mtgs w/ House Rs— Robert Costa (@costareports) July 31, 2014 Answer: senator cruz
who is being interviewed?

Context: Very sad to say that one of my absolute all-time heroes has just passed away. RIP Stan Freberg. A legend, an inspiration, and a friend.— Al Yankovic (@alyankovic) April 7, 2015 Answer: stan freberg

who is a legend and an inspiration?