context: There is almost no chance that Bernhard is gray. There is little chance that Fred went to the garden. It is probable that Brian is a lion. It is unlikely that if Brian is a lion, and Fred went to the garden, then John left the football. It is almost certain that if Brian is a lion, and Fred went to the garden, then Lily is gray. It is impossible that if Fred went to the garden, or Bernhard is gray, then Julius is green.
hypothesis: It is certain that john left the football, and Julius is green.
valid_hypothesis: It is impossible that john left the football, and Julius is green.
invalid_hypothesis: It is certain that john left the football, and Julius is green.
hypothesis_assertion: John left the football, and Julius is green.