Stream of consciousness rationale: A couple and their child may not be building a sand castle while at the beach.
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: Test for natural language inference.
Premise: "A couple and their child enjoy a day at the beach."
Hypothesis: "A couple and their child are building a sand castle on the beach."
Is the hypothesis entailed by the premise?
Options:
- yes
- no
- it is not possible to tell
A: it is not possible to tell