context: It is improbable that John dropped the milk. It is highly likely that Greg is a lion. It is probable that Bernhard is yellow.
hypothesis: It is impossible that either Greg is a lion, or John dropped the milk.
valid_hypothesis: There is a very good chance that either Greg is a lion, or John dropped the milk.
invalid_hypothesis: It is impossible that either Greg is a lion, or John dropped the milk.
hypothesis_assertion: Either Greg is a lion, or John dropped the milk.