context: It is probably not the case that Mary went to the hallway. It is unlikely that Bernhard is a swan. We believe that Sandra got the football.
hypothesis: There is a better than even chance that either Sandra got the football, or Mary went to the hallway.
valid_hypothesis: There is a better than even chance that either Sandra got the football, or Mary went to the hallway.
invalid_hypothesis: Chances are slight that either Sandra got the football, or Mary went to the hallway.
hypothesis_assertion: Either Sandra got the football, or Mary went to the hallway.