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

Example Input: Context : OPML (Outline Processor Markup Language) is an XML format for outlines (defined as ''a tree, where each node contains a set of named attributes with string values'').
Question : Which is the basis of OPML?
Example Output: XML

Example Input: Context : Othello's trusted, but jealous and traitorous ensign Michael Cassio --
Question : The Othello has what character?
Example Output: Michael Cassio

Example Input: Context : Kujava Radinovic was the second wife of King Stephen Ostoja of Bosnia and as such she was Queen of Bosnia from 1399 to 1404 and again from 1409 to 1415.
Question : What is Kujava Radinovic's spouse's name?
Example Output:
Stephen Ostoja of Bosnia