context: It is likely that Brian is a lion. There is almost no chance that Julius is green. It is improbable that Bernhard is gray. There is a better than even chance that if Brian is a lion, or Julius is green, then Lily is white. We doubt that if Julius is green, and Bernhard is gray, then Bill dropped the milk. It is probable that if Bernhard is gray, or Brian is a lion, then Mary left the football.
hypothesis: It is highly unlikely that either Julius is green, or Lily is white.
valid_hypothesis: Chances are about even that either Julius is green, or Lily is white.
invalid_hypothesis: It is highly unlikely that either Julius is green, or Lily is white.
hypothesis_assertion: Either Julius is green, or Lily is white.