context: It is probably not the case that John discarded the apple. We doubt that Daniel left the football. There is little chance that Brian is yellow. There is a very good chance that if Daniel left the football, and John discarded the apple, then Lily is a lion. It is almost certain that if Brian is yellow, or John discarded the apple, then Mary is in the garden. It is impossible that if Brian is yellow, and Daniel left the football, then Greg is a rhino.
hypothesis: It is certain that either Daniel left the football, or Lily is a lion.
valid_hypothesis: It is unlikely that either Daniel left the football, or Lily is a lion.
invalid_hypothesis: It is certain that either Daniel left the football, or Lily is a lion.
hypothesis_assertion: Either Daniel left the football, or Lily is a lion.