context: It is improbable that Lily is gray. Chances are slight that Bernhard is a swan. It is highly likely that Mary moved to the office. It is probable that if Bernhard is a swan, or Lily is gray, then Julius is a rhino. It is probable that if Bernhard is a swan, and Mary moved to the office, then John grabbed the milk. It is improbable that if Bernhard is a swan, and Mary moved to the office, then Fred went to the cinema.
hypothesis: There is little chance that either Julius is a rhino, or Fred went to the cinema.
valid_hypothesis: There is little chance that either Julius is a rhino, or Fred went to the cinema.
invalid_hypothesis: It is probably the case that either Julius is a rhino, or Fred went to the cinema.
hypothesis_assertion: Either Julius is a rhino, or Fred went to the cinema.