You will be given a definition of a task first, then some input of the task.
Write an inquisitive question about a specific text span in a given sentence such that the answer is not in the text.

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?