context: There is a very good chance that Julie is in the bedroom. There is a very good chance that Mary moved to the garden. We believe that John went to the hallway. There is a very good chance that if John went to the hallway, and Mary moved to the garden, then Sandra took the football. It is probably not the case that if either Mary moved to the garden, or John went to the hallway, then Brian is yellow. It is likely that if either John went to the hallway, or Julie is in the bedroom, then Greg is a rhino.
hypothesis: Chances are about even that mary moved to the garden, and Sandra took the football.
valid_hypothesis: Chances are about even that mary moved to the garden, and Sandra took the football.
invalid_hypothesis: It is certain that mary moved to the garden, and Sandra took the football.
hypothesis_assertion: Mary moved to the garden, and Sandra took the football.