TASK DEFINITION: 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.
PROBLEM: Context: The #KayoolaSolarBus has just arrived at Kampala Serena ahead of its launch on Tuesday. Kiira Motors (@KiiraMotors) February 14, 2016 Answer: ahead of its launch on tuesday

SOLUTION: when did the bus arrive?

PROBLEM: Context: i swear on my dogs, i wanted the issue to come out and just be. no press. no sensational headlines. no leaks. oh, well...— BRIAN MICHAEL BENDIS (@BRIANMBENDIS) April 21, 2015 Answer: the issue to come out and just be

SOLUTION: what did he want to happen?

PROBLEM: 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 powerful greenhouse gases.

SOLUTION:
what did montreal protocol countries agree to do?