context: Chances are slight that John moved to the office. Chances are about even that Bernhard is a rhino. It is unlikely that Daniel grabbed the milk. It is probably the case that if either John moved to the office, or Daniel grabbed the milk, then Lily is yellow. There is almost no chance that if Bernhard is a rhino, and John moved to the office, then Mary went to the garden. It is highly unlikely that if John moved to the office, or Daniel grabbed the milk, then Gertrude is a cat.
hypothesis: It is almost certain that bernhard is a rhino, or Gertrude is a cat.
valid_hypothesis: Chances are about even that bernhard is a rhino, or Gertrude is a cat.
invalid_hypothesis: It is almost certain that bernhard is a rhino, or Gertrude is a cat.
hypothesis_assertion: Bernhard is a rhino, or Gertrude is a cat.