context: There is a very good chance that Bernhard is green. There is a very good chance that Lily is a swan. It is certain that Brian is yellow. Chances are slight that if Brian is yellow, or Bernhard is green, then Sandra left the apple. There is little chance that if either Lily is a swan, or Bernhard is green, then Mary went to the kitchen. It is impossible that if either Bernhard is green, or Brian is yellow, then John dropped the apple.
hypothesis: It is likely that either Sandra left the apple, or John dropped the apple.
valid_hypothesis: Chances are slight that either Sandra left the apple, or John dropped the apple.
invalid_hypothesis: It is likely that either Sandra left the apple, or John dropped the apple.
hypothesis_assertion: Either Sandra left the apple, or John dropped the apple.