Premise: "A young girl smiles and sticks her thumb up while posing in front of a turtle."\nHypothesis: "A young girl is posing."\nDo we know that the hypothesis entailed by the premise?
Let’s work this out in a step by step way to be sure we have the right answer.
yes
A young girl is posing while sticking her thumb up in front of a turtle.

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The answer: yes