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

Sentence: The United States and South Korea are on high alert amid signs that North Korea is planning a possible missile test .<sep>Span: United States and South Korea
Why just list these two countries, specifically?

Sentence: Alberta Currie , the great - granddaughter of slaves , was born in a farmhouse surrounded by tobacco and cotton fields .<sep>Span: the great - granddaughter of slaves ,
What does that even mean?

Sentence: For one , there ' s red curry and other Thai food .<sep>Span: other Thai food
What kind of Thai food?