context: It is certain that Greg is a swan. It is probably not the case that Mary went to the bedroom. We doubt that Jessica is a sheep.
hypothesis: It is highly unlikely that either Jessica is a sheep, or Greg is a swan.
valid_hypothesis: There is a very good chance that either Jessica is a sheep, or Greg is a swan.
invalid_hypothesis: It is highly unlikely that either Jessica is a sheep, or Greg is a swan.
hypothesis_assertion: Either Jessica is a sheep, or Greg is a swan.