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:
Where does the umbilical vein enter the circulation of the fetus?
answer:
Where does less than a third of the blood from the umbilical vein enter the circulation of the fetus?

question:
Who sings the song spirit in the sky?
answer:
Who sings the original song "Spirit in the Sky" from 1969?

question:
When was the dont tread on me flag created?
answer:
In what year was the Don't Tread on Me/Gadsden flag created?