context: Chances are about even that Julius is a frog. It is likely that Lily is gray. It is impossible that Jeff dropped the apple. It is unlikely that if Lily is gray, and Jeff dropped the apple, then Fred went to the bedroom. It is highly unlikely that if Lily is gray, and Julius is a frog, then Daniel is in the garden. It is highly likely that if Jeff dropped the apple, or Julius is a frog, then Brian is green.
hypothesis: There is a very good chance that julius is a frog, or Lily is gray.
valid_hypothesis: There is a very good chance that julius is a frog, or Lily is gray.
invalid_hypothesis: There is almost no chance that julius is a frog, or Lily is gray.
hypothesis_assertion: Julius is a frog, or Lily is gray.