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

Input: Consider Input: Sentence: Yet whether in a direct or supporting role , aircraft carriers have taken part in almost every U . S . major military operation since World War II .<sep>Span: in almost every U . S . major military operation

Output: Have there been exceptions?

Input: Consider Input: Sentence: At a searing 1 . 56 million Scoville heat units ( SHUs ) , the Reaper knocked off the Trinidad Scorpion Butch T from Australia , the previous record holder at 1 . 46 million SHUs .<sep>Span: Reaper knocked off the Trinidad Scorpion Butch

Output: What year or just in general, when did this happen?

Input: Consider Input: Sentence: North Korea has also threatened its neighbors South Korea and Japan , both strong U . S . allies .<sep>Span: threatened
Output: What was the threat?