context: It is unlikely that Greg is a lion. It is improbable that John got the milk. We believe that Mary went to the garden.
hypothesis: It is highly likely that mary went to the garden, and Greg is a lion.
valid_hypothesis: Chances are slight that mary went to the garden, and Greg is a lion.
invalid_hypothesis: It is highly likely that mary went to the garden, and Greg is a lion.
hypothesis_assertion: Mary went to the garden, and Greg is a lion.