context: It is likely that Bernhard is a swan. It is certain that Greg is a lion. It is unlikely that Bill discarded the milk.
hypothesis: There is little chance that bill discarded the milk, and Bernhard is a swan.
valid_hypothesis: There is little chance that bill discarded the milk, and Bernhard is a swan.
invalid_hypothesis: We believe that bill discarded the milk, and Bernhard is a swan.
hypothesis_assertion: Bill discarded the milk, and Bernhard is a swan.