context: It is unlikely that Bill went to the kitchen. There is almost no chance that Fred is in the school. It is improbable that Julius is white. It is probably the case that if either Fred is in the school, or Bill went to the kitchen, then Greg is a swan. It is highly unlikely that if Julius is white, and Bill went to the kitchen, then Brian is a frog. There is little chance that if Bill went to the kitchen, and Fred is in the school, then Winona is a sheep.
hypothesis: It is improbable that either Julius is white, or Brian is a frog.
valid_hypothesis: It is improbable that either Julius is white, or Brian is a frog.
invalid_hypothesis: It is likely that either Julius is white, or Brian is a frog.
hypothesis_assertion: Either Julius is white, or Brian is a frog.