context: It is improbable that Bernhard is a swan. It is certain that Bill left the milk. It is likely that Julius is a rhino.
hypothesis: It is highly unlikely that julius is a rhino, and Bernhard is a swan.
valid_hypothesis: It is highly unlikely that julius is a rhino, and Bernhard is a swan.
invalid_hypothesis: There is a very good chance that julius is a rhino, and Bernhard is a swan.
hypothesis_assertion: Julius is a rhino, and Bernhard is a swan.