context: It is almost certain that Brian is a lion. It is unlikely that John got the football. There is a very good chance that Julius is yellow.
hypothesis: It is unlikely that john got the football, and Brian is a lion.
valid_hypothesis: It is unlikely that john got the football, and Brian is a lion.
invalid_hypothesis: There is a very good chance that john got the football, and Brian is a lion.
hypothesis_assertion: John got the football, and Brian is a lion.