context: It is impossible that Bernhard is a lion. It is almost certain that John grabbed the apple. It is likely that Greg is yellow.
hypothesis: It is impossible that bernhard is a lion, and Greg is yellow.
valid_hypothesis: It is impossible that bernhard is a lion, and Greg is yellow.
invalid_hypothesis: It is certain that bernhard is a lion, and Greg is yellow.
hypothesis_assertion: Bernhard is a lion, and Greg is yellow.