context: It is likely that Greg is gray. It is improbable that Lily is a swan. Chances are about even that Bill is in the cinema.
hypothesis: It is highly unlikely that bill is in the cinema, and Lily is a swan.
valid_hypothesis: It is highly unlikely that bill is in the cinema, and Lily is a swan.
invalid_hypothesis: It is certain that bill is in the cinema, and Lily is a swan.
hypothesis_assertion: Bill is in the cinema, and Lily is a swan.