context: There is little chance that Greg is a lion. It is improbable that Mary put down the milk. There is a better than even chance that Brian is a frog. Chances are about even that if Mary put down the milk, or Greg is a lion, then Sandra got the apple. There is a very good chance that if either Greg is a lion, or Mary put down the milk, then Bernhard is white. We believe that if Mary put down the milk, and Brian is a frog, then Julius is white.
hypothesis: Chances are slight that either Bernhard is white, or Sandra got the apple.
valid_hypothesis: Chances are slight that either Bernhard is white, or Sandra got the apple.
invalid_hypothesis: It is certain that either Bernhard is white, or Sandra got the apple.
hypothesis_assertion: Either Bernhard is white, or Sandra got the apple.