context: It is certain that Bernhard is a lion. It is almost certain that John went to the kitchen. It is improbable that Julius is green. Chances are slight that if either John went to the kitchen, or Julius is green, then Brian is a rhino. It is probably the case that if Bernhard is a lion, and Julius is green, then Lily is a swan. We believe that if Bernhard is a lion, or John went to the kitchen, then Greg is gray.
hypothesis: It is unlikely that either Brian is a rhino, or Lily is a swan.
valid_hypothesis: It is unlikely that either Brian is a rhino, or Lily is a swan.
invalid_hypothesis: We believe that either Brian is a rhino, or Lily is a swan.
hypothesis_assertion: Either Brian is a rhino, or Lily is a swan.