context: It is highly likely that Sumit is thirsty. It is highly unlikely that Sandra got the football. Chances are about even that Jessica is a mouse. We doubt that if Jessica is a mouse, or Sumit is thirsty, then Lily is yellow. It is highly likely that if Jessica is a mouse, and Sandra got the football, then Mary dropped the milk. It is probable that if Sandra got the football, or Sumit is thirsty, then Bill went to the bedroom.
hypothesis: There is almost no chance that mary dropped the milk, and Jessica is a mouse.
valid_hypothesis: There is almost no chance that mary dropped the milk, and Jessica is a mouse.
invalid_hypothesis: It is highly likely that mary dropped the milk, and Jessica is a mouse.
hypothesis_assertion: Mary dropped the milk, and Jessica is a mouse.