instruction:
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.
question:
Who played marilla on anne of green gables?
answer:
Who played marilla on the 1919 film anne of green gables?


question:
Who played in the odd couple on broadway?
answer:
Who played Oscar Madison in the odd couple on the original broadway performance?


question:
Who established mission san francisco de la espada?
answer:

Who is the country that established mission san francisco de la espada?