context: It is improbable that Bill is in the office. It is impossible that Sandra left the milk. It is unlikely that Lily is yellow.
hypothesis: It is impossible that sandra left the milk, and Bill is in the office.
valid_hypothesis: It is impossible that sandra left the milk, and Bill is in the office.
invalid_hypothesis: It is highly likely that sandra left the milk, and Bill is in the office.
hypothesis_assertion: Sandra left the milk, and Bill is in the office.