context: Chances are slight that Mary dropped the milk. It is improbable that Brian is white. It is highly likely that Lily is a lion. There is a very good chance that if Lily is a lion, and Brian is white, then John got the football. It is almost certain that if either Brian is white, or Mary dropped the milk, then Bernhard is yellow. It is probable that if either Lily is a lion, or Mary dropped the milk, then Julius is green.
hypothesis: It is almost certain that mary dropped the milk, or Bernhard is yellow.
valid_hypothesis: We doubt that mary dropped the milk, or Bernhard is yellow.
invalid_hypothesis: It is almost certain that mary dropped the milk, or Bernhard is yellow.
hypothesis_assertion: Mary dropped the milk, or Bernhard is yellow.