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 : HD 141937 is a star in the constellation of Libra at a distance of 109 ly. 
Answer : Libra
Which was the constellation for HD 141937?

Context : Legmen is an American drama series that aired on NBC on Friday nights from January 20, 1984 to March 16, 1984. 
Answer : NBC
What was the original network for Legmen?

Context : The PIAT was designed in 1942 in response to the British Army's need for a more effective infantry anti-tank weapon, and entered service in 1943. 
Answer : 1942

What year was PIAT made?