context: It is certain that Brian is green. There is little chance that Julius is a rhino. It is impossible that Greg is gray. We doubt that if either Julius is a rhino, or Brian is green, then Bernhard is a frog. It is probably not the case that if Julius is a rhino, or Greg is gray, then Emily is a cat. There is almost no chance that if either Brian is green, or Greg is gray, then Lily is white.
hypothesis: It is certain that either Brian is green, or Lily is white.
valid_hypothesis: It is certain that either Brian is green, or Lily is white.
invalid_hypothesis: It is highly unlikely that either Brian is green, or Lily is white.
hypothesis_assertion: Either Brian is green, or Lily is white.