context: It is impossible that Bernhard is yellow. Chances are about even that John went to the bedroom. We doubt that Julius is a swan. It is probable that if Bernhard is yellow, and John went to the bedroom, then Fred is in the bedroom. It is certain that if Julius is a swan, or John went to the bedroom, then Mary left the milk. It is certain that if either Julius is a swan, or Bernhard is yellow, then Greg is a frog.
hypothesis: It is probably the case that fred is in the bedroom, or Bernhard is yellow.
valid_hypothesis: It is impossible that fred is in the bedroom, or Bernhard is yellow.
invalid_hypothesis: It is probably the case that fred is in the bedroom, or Bernhard is yellow.
hypothesis_assertion: Fred is in the bedroom, or Bernhard is yellow.