context: It is highly likely that Greg is yellow. It is improbable that Bill went to the kitchen. It is probable that Fred is in the bedroom. It is almost certain that if Greg is yellow, or Fred is in the bedroom, then Yann is tired. It is highly likely that if Greg is yellow, or Fred is in the bedroom, then Mary moved to the office. Chances are about even that if Fred is in the bedroom, or Greg is yellow, then John dropped the milk.
hypothesis: It is almost certain that either Bill went to the kitchen, or John dropped the milk.
valid_hypothesis: Chances are about even that either Bill went to the kitchen, or John dropped the milk.
invalid_hypothesis: It is almost certain that either Bill went to the kitchen, or John dropped the milk.
hypothesis_assertion: Either Bill went to the kitchen, or John dropped the milk.