context: We believe that Lily is white. There is a very good chance that Bernhard is yellow. It is highly likely that Bill went to the office. Chances are about even that if Lily is white, and Bernhard is yellow, then Sandra left the apple. It is improbable that if either Lily is white, or Bernhard is yellow, then Brian is a lion. It is probably the case that if Bernhard is yellow, or Lily is white, then Greg is green.
hypothesis: We believe that either Bernhard is yellow, or Lily is white.
valid_hypothesis: It is probably not the case that either Bernhard is yellow, or Lily is white.
invalid_hypothesis: We believe that either Bernhard is yellow, or Lily is white.
hypothesis_assertion: Either Bernhard is yellow, or Lily is white.