context: It is probably not the case that Bernhard is a lion. Chances are about even that Julius is white. It is probably not the case that Bill went to the garden. It is improbable that if either Bill went to the garden, or Bernhard is a lion, then Winona is a wolf. It is probably the case that if Julius is white, or Bernhard is a lion, then Sandra grabbed the milk. We believe that if Bernhard is a lion, and Bill went to the garden, then Brian is a swan.
hypothesis: We doubt that either Bernhard is a lion, or Brian is a swan.
valid_hypothesis: We doubt that either Bernhard is a lion, or Brian is a swan.
invalid_hypothesis: It is highly likely that either Bernhard is a lion, or Brian is a swan.
hypothesis_assertion: Either Bernhard is a lion, or Brian is a swan.