context: It is impossible that John went to the garden. It is probable that Greg is a swan. It is improbable that Brian is yellow.
hypothesis: There is a very good chance that brian is yellow, and John went to the garden.
valid_hypothesis: It is impossible that brian is yellow, and John went to the garden.
invalid_hypothesis: There is a very good chance that brian is yellow, and John went to the garden.
hypothesis_assertion: Brian is yellow, and John went to the garden.