Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : 45 Commando Royal Marines (pronounced ``four-five commando'') is a battalion sized unit of the British Royal Marines and subordinate unit within 3 Commando Brigade Royal Marines, the principal Commando formation, under the Operational Command of Commander in Chief Fleet. 
Answer : Royal Marines
What military organization did 45 Commando belong to?

Context : The 1982 El Salvador earthquake occurred on 19 June 1982 at 00:21 local time (06:21 UTC). 
Answer : 19 June 1982
When did 1982 El Salvador earthquake occurr?

Context : NGC 12 is a spiral galaxy in the Pisces constellation. 
Answer : Pisces

What constellation is home to NGC 12?