context: It is almost certain that Brian is white. It is certain that Julius is a frog. It is probably not the case that Gertrude is a mouse. We doubt that if Julius is a frog, or Brian is white, then Mary got the milk. There is almost no chance that if Julius is a frog, and Brian is white, then John dropped the apple. There is little chance that if either Brian is white, or Julius is a frog, then Lily is a lion.
hypothesis: It is almost certain that either Brian is white, or Lily is a lion.
valid_hypothesis: It is almost certain that either Brian is white, or Lily is a lion.
invalid_hypothesis: It is probably not the case that either Brian is white, or Lily is a lion.
hypothesis_assertion: Either Brian is white, or Lily is a lion.