context: It is probably not the case that Brian is a frog. It is highly likely that Julius is white. We doubt that Mary got the milk. It is improbable that if Brian is a frog, and Julius is white, then Lily is green. It is probable that if Mary got the milk, or Brian is a frog, then Bernhard is a lion. It is certain that if either Julius is white, or Brian is a frog, then John went to the kitchen.
hypothesis: There is a very good chance that either Brian is a frog, or Bernhard is a lion.
valid_hypothesis: We doubt that either Brian is a frog, or Bernhard is a lion.
invalid_hypothesis: There is a very good chance that either Brian is a frog, or Bernhard is a lion.
hypothesis_assertion: Either Brian is a frog, or Bernhard is a lion.