context: It is almost certain that Bernhard is gray. It is probable that Greg is a rhino. There is a very good chance that Yann is tired. There is little chance that if Yann is tired, or Greg is a rhino, then Gertrude is a cat. There is a better than even chance that if either Greg is a rhino, or Yann is tired, then John moved to the office. There is a better than even chance that if Greg is a rhino, or Bernhard is gray, then Julius is a frog.
hypothesis: There is a very good chance that gertrude is a cat, and Yann is tired.
valid_hypothesis: It is improbable that gertrude is a cat, and Yann is tired.
invalid_hypothesis: There is a very good chance that gertrude is a cat, and Yann is tired.
hypothesis_assertion: Gertrude is a cat, and Yann is tired.