For this chain-of-thought reasoning and answer, what was the question?
Workers on scaffolding are not assumed to be wearing hard hats.
 A: it is not possible to tell
Q: Premise: "Construction workers stand on scaffolding."
Hypothesis: "Construction workers are on scaffolding while wearing hard hats."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no