context: We doubt that Julius is white. It is likely that Sandra put down the milk. Chances are about even that John left the apple. It is almost certain that if either Julius is white, or John left the apple, then Lily is a frog. There is almost no chance that if either Julius is white, or John left the apple, then Brian is a swan. It is improbable that if Sandra put down the milk, or Julius is white, then Bernhard is a frog.
hypothesis: Chances are about even that either Sandra put down the milk, or John left the apple.
valid_hypothesis: Chances are about even that either Sandra put down the milk, or John left the apple.
invalid_hypothesis: It is almost certain that either Sandra put down the milk, or John left the apple.
hypothesis_assertion: Either Sandra put down the milk, or John left the apple.