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:
What is the si unit for magnetic field strength?
answer:
What is the si unit symbol for magnetic field strength?


question:
Where are most of the us oil refineries located?
answer:
Where with respect to geographical features are most of the us oil refineries located?


question:
What is the name of the largest lake in canada?
answer:

What is the largest lake that is completely in Canada?