premise: The man is digging in the sand while others watch to see what he discovers. hypothesis: a man digs to see what he can find.
entailment: If he's digging with hopes that he discovers something, he hopes to find soemthing.|entailment: Others watch as a man digs to see what he can find.|entailment: "To see what he can find" is a rephrasing of "to see what he discovers".