context: It is probably the case that Sandra took the football. There is almost no chance that John went to the hallway. It is improbable that Brian is a frog. It is certain that if either Brian is a frog, or Sandra took the football, then Daniel left the apple. There is a very good chance that if Brian is a frog, and Sandra took the football, then Mary moved to the garden. It is highly likely that if Sandra took the football, or John went to the hallway, then Lily is a lion.
hypothesis: There is almost no chance that either Brian is a frog, or Lily is a lion.
valid_hypothesis: There is a better than even chance that either Brian is a frog, or Lily is a lion.
invalid_hypothesis: There is almost no chance that either Brian is a frog, or Lily is a lion.
hypothesis_assertion: Either Brian is a frog, or Lily is a lion.