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 is number 22 on the kansas city chiefs team?
answer:
Who was number 22 on the Kansas City Chiefs from 2003-06?


question:
When did the state of the union address start?
answer:
When did the annual state of the union address start?


question:
When did the slave trade end in britain?
answer:

When did the ownership and purchasing of slaves end in Britain?