context: We believe that Bernhard is a swan. There is a very good chance that Fred went to the cinema. It is highly unlikely that Julius is a rhino. There is almost no chance that if either Julius is a rhino, or Fred went to the cinema, then Lily is green. It is highly unlikely that if Bernhard is a swan, and Fred went to the cinema, then John left the football. We believe that if Fred went to the cinema, and Julius is a rhino, then Winona is a cat.
hypothesis: It is probable that either John left the football, or Lily is green.
valid_hypothesis: It is highly unlikely that either John left the football, or Lily is green.
invalid_hypothesis: It is probable that either John left the football, or Lily is green.
hypothesis_assertion: Either John left the football, or Lily is green.