Detailed Instructions: 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.
Q: Context : Margaret of Prades (1388/95 -- 23 July 1429) was the queen consort of Aragon as a wife of the King Martin of Aragon.
Answer : Martin of Aragon
A:
What is Margaret of Prades's spouse's name?