Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.

Sentence: And gun supporters are encouraging delegates , alternates and guests to carry black powder guns inside .<sep>Span: black powder guns
What are black powder guns?

Sentence: Officials with the National Rifle Association say recent rallies at fast - food restaurants and home - improvement stores are " downright weird and certainly not a practical way to go normally about your business while being prepared to defend yourself . " While the group applauds Texas for a " robust gun culture , " leaders of the group in a statement chastise " a small number ( who ) have recently crossed the line from enthusiasm to downright foolishness . " This comes as countless Republicans heading toward the state GOP convention in Fort Worth later this week plan to carry long guns outside the Fort Worth Convention Center .<sep>Span: small number
How many people is a small number?

Sentence: Geologist Erin Argyilan has in the last 10 months studied sediment , analyzed wind patterns and mapped terrain , but she hasn ' t solved the mystery of the holes that appear and vanish in the beige sands of Mount Baldy at Indiana Dunes National Lakeshore .<sep>Span: studied
How did Erin Argylian study this sediment?