context: It is almost certain that Mary dropped the apple. It is probably the case that Julius is a rhino. It is probable that Gertrude is a mouse. Chances are slight that if Julius is a rhino, or Mary dropped the apple, then John went to the hallway. There is little chance that if Julius is a rhino, and Mary dropped the apple, then Bernhard is a swan. We doubt that if Mary dropped the apple, or Gertrude is a mouse, then Antoine is hungry.
hypothesis: It is highly likely that either Bernhard is a swan, or Mary dropped the apple.
valid_hypothesis: It is highly likely that either Bernhard is a swan, or Mary dropped the apple.
invalid_hypothesis: It is impossible that either Bernhard is a swan, or Mary dropped the apple.
hypothesis_assertion: Either Bernhard is a swan, or Mary dropped the apple.