context: Chances are about even that Mary moved to the garden. It is likely that Bernhard is a rhino. It is highly likely that Julius is a lion. There is a better than even chance that if either Julius is a lion, or Mary moved to the garden, then Greg is yellow. There is a very good chance that if Bernhard is a rhino, and Mary moved to the garden, then John left the football. It is probable that if either Julius is a lion, or Bernhard is a rhino, then Brian is a frog.
hypothesis: Chances are about even that either Greg is yellow, or John left the football.
valid_hypothesis: Chances are about even that either Greg is yellow, or John left the football.
invalid_hypothesis: It is highly unlikely that either Greg is yellow, or John left the football.
hypothesis_assertion: Either Greg is yellow, or John left the football.