context: Chances are slight that Julie is in the bedroom. We doubt that Brian is green. There is little chance that Bill moved to the garden. It is unlikely that if either Brian is green, or Julie is in the bedroom, then Yann got the milk there. It is probably not the case that if Julie is in the bedroom, or Brian is green, then Greg is a rhino. It is unlikely that if either Bill moved to the garden, or Brian is green, then Bernhard is gray.
hypothesis: There is a better than even chance that either Yann got the milk there, or Bernhard is gray.
valid_hypothesis: There is little chance that either Yann got the milk there, or Bernhard is gray.
invalid_hypothesis: There is a better than even chance that either Yann got the milk there, or Bernhard is gray.
hypothesis_assertion: Either Yann got the milk there, or Bernhard is gray.