What was the question for this implicit rationale, and corresponding answer?
An old man sleeping alone on a plane with a bag in his lap does not have to be a pilot.
 The answer: it is not possible to tell
The question: Premise: "Old man sleeping alone on a plane with a bag in his lap."
Based on this premise, can we conclude that the hypothesis "A pilot has fallen asleep on the plane by himself." is true?
Options:
- yes
- it is not possible to tell
- no