context: It is impossible that Bernhard is a swan. Chances are slight that John went to the bedroom. It is highly likely that Sandra grabbed the milk. There is almost no chance that if John went to the bedroom, or Bernhard is a swan, then Winona is a mouse. It is likely that if either Bernhard is a swan, or John went to the bedroom, then Brian is gray. There is a very good chance that if John went to the bedroom, or Bernhard is a swan, then Julius is a frog.
hypothesis: It is highly unlikely that winona is a mouse, or Brian is gray.
valid_hypothesis: It is highly unlikely that winona is a mouse, or Brian is gray.
invalid_hypothesis: It is probable that winona is a mouse, or Brian is gray.
hypothesis_assertion: Winona is a mouse, or Brian is gray.