In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to provide one question which clarifies the input question and it has one unique answer, and also provide an answer to the generated question. Generated question and answer should be separated with a new line.

[Q]: When did o canada become canada's national anthem?
[A]: When was o canada first used as canada's national anthem?|When did "O Canada" become Canada's de facto national anthem? 
 1939


[Q]: Who played celie in the color purple on broadway?
[A]: Who played celie in the color purple on broadway from 2015 to 2017? 
 Cynthia Erivo


[Q]: Before the spanish took over who owned the land that is now mexico?
[A]:
Who owned the land that is now Mexico, from 1325-1521? 
 Aztecs