TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: What military organization did 45 Commando belong to?

PROBLEM: Context : Beyond the Poseidon Adventure is a 1979 American adventure film, a sequel to the 1972 film The Poseidon Adventure. 
Answer : The Poseidon Adventure

SOLUTION: Which is the basis of Beyond the Poseidon Adventure?

PROBLEM: Context : Georg Desmarées or Des Marées, a portrait painter, was born in 1697 at Stockholm, where he was instructed in painting by Martin Meytens, whose assistant he afterwards became. 
Answer : painter

SOLUTION:
What was Georg Desmarées's occupation?