context: A boy at the beach runs through the surf towards three other people who are already in the water.
hypothesis: Chances are about even that the boy is running through the surf towards his family that are swimming.
valid_hypothesis: Chances are about even that the boy is running through the surf towards his family that are swimming.
invalid_hypothesis: There is almost no chance that the boy is running through the surf towards his family that are swimming.
hypothesis_assertion: The boy is running through the surf towards his family that are swimming.