context: It is certain that Mary went to the hallway. It is improbable that Daniel left the football. There is a very good chance that Brian is yellow.
hypothesis: We doubt that either Daniel left the football, or Mary went to the hallway.
valid_hypothesis: It is highly likely that either Daniel left the football, or Mary went to the hallway.
invalid_hypothesis: We doubt that either Daniel left the football, or Mary went to the hallway.
hypothesis_assertion: Either Daniel left the football, or Mary went to the hallway.