context: It is probably the case that Julius is yellow. It is unlikely that Brian is a rhino. It is highly unlikely that Bernhard is green. There is a very good chance that if Julius is yellow, and Bernhard is green, then Bill got the milk there. It is highly unlikely that if Julius is yellow, or Bernhard is green, then Jessica is a wolf. It is probably not the case that if either Brian is a rhino, or Bernhard is green, then Greg is yellow.
hypothesis: It is certain that either Greg is yellow, or Bernhard is green.
valid_hypothesis: Chances are slight that either Greg is yellow, or Bernhard is green.
invalid_hypothesis: It is certain that either Greg is yellow, or Bernhard is green.
hypothesis_assertion: Either Greg is yellow, or Bernhard is green.