context: It is probable that John went to the garden. We doubt that Brian is a rhino. There is a better than even chance that Fred is in the office. It is likely that if John went to the garden, or Brian is a rhino, then Julius is a swan. We believe that if Brian is a rhino, or Fred is in the office, then Sandra grabbed the milk. It is improbable that if Brian is a rhino, and John went to the garden, then Bernhard is gray.
hypothesis: There is a better than even chance that either Fred is in the office, or Bernhard is gray.
valid_hypothesis: There is a better than even chance that either Fred is in the office, or Bernhard is gray.
invalid_hypothesis: It is impossible that either Fred is in the office, or Bernhard is gray.
hypothesis_assertion: Either Fred is in the office, or Bernhard is gray.