context: We doubt that Fred is in the school. It is highly likely that Mary went to the garden. There is almost no chance that Lily is white. It is highly unlikely that if Fred is in the school, or Mary went to the garden, then Sandra got the milk. There is a better than even chance that if Fred is in the school, and Lily is white, then Brian is gray. We doubt that if Lily is white, and Fred is in the school, then Greg is green.
hypothesis: It is probably not the case that mary went to the garden, or Fred is in the school.
valid_hypothesis: It is highly likely that mary went to the garden, or Fred is in the school.
invalid_hypothesis: It is probably not the case that mary went to the garden, or Fred is in the school.
hypothesis_assertion: Mary went to the garden, or Fred is in the school.