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.

Ex Input:
Context : In 1994, the U.S. military officially accepted the XM4 into service as the M4 carbine to replace M16A2s in certain roles. 
Answer : 1994

Ex Output:
In which year was the service entry date for M4 carbine?


Ex Input:
Context : The Chadian National Armed Forces (Forces Armées Nationales Tchadiennes or FANT) was the army of the central government of Chad from January 1983, when the President Hissène Habré's forces, in first place his personal Armed Forces of the North (FAN), were merged. 
Answer : Armed Forces of the North

Ex Output:
Which is the basis of Chadian National Armed Forces?


Ex Input:
Context : MOA-2009-BLG-387L is a red dwarf in the Sagittarius constellation that is host to the planet MOA-2009-BLG-387Lb. 
Answer : Sagittarius

Ex Output:

What constellation is MOA-2009-BLG-387L part of?