context: There is little chance that Julius is gray. It is almost certain that Brian is a rhino. It is probable that Sandra grabbed the milk. It is impossible that if Sandra grabbed the milk, or Brian is a rhino, then Greg is a frog. It is highly likely that if either Julius is gray, or Brian is a rhino, then Fred went to the hallway. Chances are slight that if Sandra grabbed the milk, or Julius is gray, then Lily is a swan.
hypothesis: It is highly likely that either Brian is a rhino, or Lily is a swan.
valid_hypothesis: It is highly likely that either Brian is a rhino, or Lily is a swan.
invalid_hypothesis: It is probably not the case that either Brian is a rhino, or Lily is a swan.
hypothesis_assertion: Either Brian is a rhino, or Lily is a swan.