What was the question for this implicit rationale, and corresponding answer?
A person stands in subway station as train goes by doesn't necessarily imply he is outside.
 The answer: it is not possible to tell
The question: Premise: "Man in gray sweatshirts stands in subway station with crowd of people as blue subway train goes by."
Based on this premise, can we conclude that the hypothesis "The man is outside." is true?
Options:
- yes
- it is not possible to tell
- no