TASK DEFINITION: Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.
PROBLEM: Sentence: And gun supporters are encouraging delegates , alternates and guests to carry black powder guns inside .<sep>Span: black powder guns

SOLUTION: What are black powder guns?

PROBLEM: Sentence: The fresh estimates are also another way of measuring whether the recession , which clamped down on state - to - state movement , has loosened its grip on American migration .<sep>Span: estimates

SOLUTION: Are the statistics previously mentioned actual numbers or just estimates?

PROBLEM: Sentence: Planetary scientists dream of sending a geologist to Mars to study its rocks by hand .<sep>Span: its rocks

SOLUTION:
What makes these rocks special?