context: It is improbable that Fred put down the apple. It is likely that Greg is a lion. It is impossible that Daniel left the football.
hypothesis: It is impossible that greg is a lion, and Daniel left the football.
valid_hypothesis: It is impossible that greg is a lion, and Daniel left the football.
invalid_hypothesis: There is a very good chance that greg is a lion, and Daniel left the football.
hypothesis_assertion: Greg is a lion, and Daniel left the football.