In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.

Who played marilla on anne of green gables?
Who played marilla on the 1919 film anne of green gables?

Who sings backup on thank you led zeppelin?
Who sings backup on Thank You by Led Zeppelin and plays drums for the band?

What are the different cardiac biomarkers in heart disease?

What are the different cardiac biomarkers in heart disease signifying a Myocardial Infarction?