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.
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Question: 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

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


Question: Context : ``Perfect Week'' is the 14th episode of the fifth season of the CBS situation comedy How I Met Your Mother and 102nd episode overall. 
Answer : How I Met Your Mother

Answer: Of what series is Perfect Week a part of?


Question: Context : Married to Tolui, Genghis' youngest son, Sorghaghtani Beki became one of the most powerful and competent women in the Mongol Empire. 
Answer : Tolui

Answer:
What is Sorghaghtani Beki's spouse's name?