context: We doubt that John dropped the milk. Chances are slight that Gertrude is a sheep. It is probably not the case that Winona is a wolf.
hypothesis: It is probably not the case that gertrude is a sheep, or John dropped the milk.
valid_hypothesis: It is probably not the case that gertrude is a sheep, or John dropped the milk.
invalid_hypothesis: It is likely that gertrude is a sheep, or John dropped the milk.
hypothesis_assertion: Gertrude is a sheep, or John dropped the milk.