context: It is probably the case that Julius is gray. We doubt that Brian is a frog. It is certain that Bernhard is a lion. We doubt that if Julius is gray, and Brian is a frog, then Greg is white. It is likely that if Brian is a frog, and Bernhard is a lion, then Lily is green. It is probable that if Julius is gray, or Bernhard is a lion, then Mary went to the hallway.
hypothesis: It is highly unlikely that either Brian is a frog, or Lily is green.
valid_hypothesis: It is highly unlikely that either Brian is a frog, or Lily is green.
invalid_hypothesis: There is a very good chance that either Brian is a frog, or Lily is green.
hypothesis_assertion: Either Brian is a frog, or Lily is green.