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.

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

When was the carbon tax introduced in canada?
When was the first carbon tax introduced in a canadian territory? 
 June 2007

Who played the voice of young simba in the lion king?

Who voiced young Simba in The Lion King(1994)? 
 Johnathan Taylor Thomas