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.

[EX Q]: Who sang on the banks of the river?
[EX A]: Who sang background on the 1959 song with lyrics on the banks of the river?

[EX Q]: How many layers are there in osi model?
[EX A]: How many layers are there generally considered to be in the OSI model?

[EX Q]: Who played the wicked witch on wizard of oz?
[EX A]:
Who played the Wicked Witch of the West on the 1939 movie The Wizard of Oz?