context: It is improbable that Bill went to the office. It is probable that Brian is green. There is little chance that Bernhard is a swan. We doubt that if either Bernhard is a swan, or Brian is green, then Sandra got the apple. It is certain that if Bernhard is a swan, or Brian is green, then Greg is yellow. It is highly unlikely that if either Bernhard is a swan, or Brian is green, then Lily is yellow.
hypothesis: It is unlikely that either Brian is green, or Lily is yellow.
valid_hypothesis: It is likely that either Brian is green, or Lily is yellow.
invalid_hypothesis: It is unlikely that either Brian is green, or Lily is yellow.
hypothesis_assertion: Either Brian is green, or Lily is yellow.