Stream of consciousness rationale: The group is not formally dressed if they are wearing jeans and shirts.
The question and answer pair are described below.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Q: Premise: "A group of formally dressed people are laughing."
Hypothesis: "The people are in jeans and shirts."
Is the hypothesis entailed by the premise?
Options:
- yes
- it is not possible to tell
- no
A: no