Reconstruct a question, answer pair from this explanation: Riding in a white shirt on a bicycle on the street does not necessarily mean biking to work.

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Q:Test for natural language inference.
Premise: "An old skinny man wearing the dirty white shirt riding on a bicycle on the street."
Hypothesis: "A man is biking to work."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A:it is not possible to tell
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