context: There is a very good chance that Bernhard is gray. We doubt that Sandra took the milk. It is improbable that Lily is white. There is a better than even chance that if either Sandra took the milk, or Bernhard is gray, then Mary went to the hallway. It is probable that if Bernhard is gray, or Lily is white, then Greg is gray. There is a very good chance that if either Bernhard is gray, or Sandra took the milk, then John put down the apple.
hypothesis: It is almost certain that either Greg is gray, or Bernhard is gray.
valid_hypothesis: It is probably not the case that either Greg is gray, or Bernhard is gray.
invalid_hypothesis: It is almost certain that either Greg is gray, or Bernhard is gray.
hypothesis_assertion: Either Greg is gray, or Bernhard is gray.