Reconstruct a question, answer pair from this explanation: A crossing guard directing traffic has a stationary position so he cannot be crossing the street.

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Q:Test for natural language inference.
Premise: "A man is crossing a street which is lined by a wall of graffiti."
Hypothesis: "A crossing guard directs traffic."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A:no
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