Generate a correct and concise answer for the question based on the words in the context.

Context : Second of the seven recorded sons of William Garden Blaikie, minister of Pilrig Free Church, and Margaret Catherine Biggar, Walter Biggar Blaikie was educated at Edinburgh Academy and Edinburgh University. 
Question : The college Walter Biggar Blaikie attended was what?
Edinburgh Academy

Context : ISO 639 is a set of standards by the International Organization for Standardization that is concerned with representation of names for language and language groups. 
Question : Who set the standards for ISO 639?
International Organization for Standardization

Context : In the Mahabharata epic, Madri (Sanskrit: माद्री Mādrī) was a princess of the Madra kingdom and the second wife of King Pandu. 
Question : What is Madri's spouse's name?

Pandu