context: It is probably the case that Brian is a rhino. It is almost certain that John went to the garden. It is unlikely that Lily is a frog.
hypothesis: It is likely that john went to the garden, and Brian is a rhino.
valid_hypothesis: It is likely that john went to the garden, and Brian is a rhino.
invalid_hypothesis: There is little chance that john went to the garden, and Brian is a rhino.
hypothesis_assertion: John went to the garden, and Brian is a rhino.