context: Chances are about even that John discarded the milk. There is almost no chance that Greg is green. It is improbable that Lily is white. It is improbable that if Lily is white, or John discarded the milk, then Bernhard is white. Chances are slight that if Greg is green, and Lily is white, then Julius is a swan. It is highly unlikely that if Greg is green, and Lily is white, then Bill went to the kitchen.
hypothesis: It is improbable that bernhard is white, or Lily is white.
valid_hypothesis: It is improbable that bernhard is white, or Lily is white.
invalid_hypothesis: It is certain that bernhard is white, or Lily is white.
hypothesis_assertion: Bernhard is white, or Lily is white.