context: There is little chance that Brian is a lion. Chances are about even that Mary put down the milk. Chances are about even that John went to the garden.
hypothesis: It is probably the case that john went to the garden, and Brian is a lion.
valid_hypothesis: It is highly unlikely that john went to the garden, and Brian is a lion.
invalid_hypothesis: It is probably the case that john went to the garden, and Brian is a lion.
hypothesis_assertion: John went to the garden, and Brian is a lion.