context: It is certain that Lily is a swan. It is almost certain that Bill went to the garden. It is impossible that Greg is yellow.
hypothesis: It is certain that lily is a swan, or Greg is yellow.
valid_hypothesis: It is certain that lily is a swan, or Greg is yellow.
invalid_hypothesis: It is unlikely that lily is a swan, or Greg is yellow.
hypothesis_assertion: Lily is a swan, or Greg is yellow.