context: It is almost certain that Greg is gray. We doubt that John got the football. It is probable that Bill dropped the milk. It is highly likely that if either Bill dropped the milk, or John got the football, then Winona is a mouse. There is little chance that if John got the football, and Greg is gray, then Mary went to the garden. We believe that if Greg is gray, or John got the football, then Bernhard is yellow.
hypothesis: We believe that either John got the football, or Greg is gray.
valid_hypothesis: We believe that either John got the football, or Greg is gray.
invalid_hypothesis: It is probably not the case that either John got the football, or Greg is gray.
hypothesis_assertion: Either John got the football, or Greg is gray.