context: It is probably the case that Fred is in the park. It is almost certain that Julius is yellow. Chances are about even that Sandra took the football. It is likely that if Sandra took the football, and Fred is in the park, then Bernhard is gray. There is almost no chance that if either Fred is in the park, or Sandra took the football, then Bill dropped the milk. It is highly likely that if Julius is yellow, or Sandra took the football, then Mary moved to the garden.
hypothesis: It is almost certain that mary moved to the garden, or Fred is in the park.
valid_hypothesis: It is almost certain that mary moved to the garden, or Fred is in the park.
invalid_hypothesis: It is probably not the case that mary moved to the garden, or Fred is in the park.
hypothesis_assertion: Mary moved to the garden, or Fred is in the park.