context: It is highly unlikely that Lily is a swan. It is improbable that John went to the garden. It is unlikely that Brian is white.
hypothesis: It is impossible that john went to the garden, and Lily is a swan.
valid_hypothesis: It is impossible that john went to the garden, and Lily is a swan.
invalid_hypothesis: It is almost certain that john went to the garden, and Lily is a swan.
hypothesis_assertion: John went to the garden, and Lily is a swan.