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

Example Input: Sentence: " I consider this a top national security priority , " Obama said .<sep>Span: consider
Example Output: WHat are the other options?

Example Input: Sentence: Outlined in top - secret documents leaked to news media by former NSA contractor Edward Snowden , the disclosures are bruising ties with some of the closest U . S . allies , adding to the domestic outcry over the NSA ' s collection of data from millions of Americans ' communications as part of an effort to unearth terrorist plots .<sep>Span: the disclosures
Example Output: Which disclosures? Spying on allies?

Example Input: Sentence: A New York City commuter train rounding a riverside curve derailed Sunday , killing four people and injuring more than 60 in a crash that threw passengers from the toppling cars and left a snaking chain of twisted wreckage just inches from the water .<sep>Span: derailed Sunday ,
Example Output:
Why did the train derail?