context: Chances are about even that John got the apple. There is a very good chance that Brian is a swan. It is probable that Mary went to the kitchen. Chances are slight that if John got the apple, and Mary went to the kitchen, then Jessica is a sheep. It is certain that if either John got the apple, or Mary went to the kitchen, then Julius is white. It is probably the case that if John got the apple, or Brian is a swan, then Bernhard is yellow.
hypothesis: Chances are about even that either Bernhard is yellow, or John got the apple.
valid_hypothesis: Chances are about even that either Bernhard is yellow, or John got the apple.
invalid_hypothesis: There is almost no chance that either Bernhard is yellow, or John got the apple.
hypothesis_assertion: Either Bernhard is yellow, or John got the apple.