context: It is almost certain that Mary went to the hallway. There is almost no chance that Greg is a swan. It is probably not the case that John left the football.
hypothesis: It is probably the case that john left the football, and Mary went to the hallway.
valid_hypothesis: It is probably not the case that john left the football, and Mary went to the hallway.
invalid_hypothesis: It is probably the case that john left the football, and Mary went to the hallway.
hypothesis_assertion: John left the football, and Mary went to the hallway.