context: There is a very good chance that Lily is a rhino. It is impossible that Mary went to the office. Chances are about even that John put down the apple. There is little chance that if either John put down the apple, or Lily is a rhino, then Winona is a cat. It is almost certain that if John put down the apple, and Lily is a rhino, then Bernhard is a swan. It is probable that if either Mary went to the office, or John put down the apple, then Emily is a cat.
hypothesis: Chances are about even that either Winona is a cat, or John put down the apple.
valid_hypothesis: Chances are about even that either Winona is a cat, or John put down the apple.
invalid_hypothesis: It is almost certain that either Winona is a cat, or John put down the apple.
hypothesis_assertion: Either Winona is a cat, or John put down the apple.