context: It is probably not the case that Julius is a swan. It is certain that John picked up the milk. Chances are about even that Bill went to the cinema. It is almost certain that if either John picked up the milk, or Bill went to the cinema, then Greg is yellow. It is probably the case that if either Bill went to the cinema, or Julius is a swan, then Bernhard is green. We doubt that if Julius is a swan, or Bill went to the cinema, then Lily is a rhino.
hypothesis: Chances are about even that bill went to the cinema, or Lily is a rhino.
valid_hypothesis: Chances are about even that bill went to the cinema, or Lily is a rhino.
invalid_hypothesis: It is certain that bill went to the cinema, or Lily is a rhino.
hypothesis_assertion: Bill went to the cinema, or Lily is a rhino.