context: It is impossible that Daniel left the football. We doubt that Greg is a swan. It is certain that Julius is a frog.
hypothesis: There is a very good chance that daniel left the football, and Julius is a frog.
valid_hypothesis: It is impossible that daniel left the football, and Julius is a frog.
invalid_hypothesis: There is a very good chance that daniel left the football, and Julius is a frog.
hypothesis_assertion: Daniel left the football, and Julius is a frog.