In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to provide one question which clarifies the input question and it has one unique answer, and also provide an answer to the generated question. Generated question and answer should be separated with a new line.

Average height for males in the united states?
What is the average height for all males in the United States? 
 175.3 cm (5 ft 9 in)

Who was the actress that played rizzo in grease?
Who played rizzo in the 1978 film grease? 
 Stockard Channing

What us cities have the highest african american population?

What us city has the highest number of african american population? 
 New York, NY