context: Chances are slight that Jessica is a cat. Chances are about even that John put down the milk. There is a very good chance that Sumit is thirsty. It is certain that if John put down the milk, or Jessica is a cat, then Mary went to the garden. There is almost no chance that if either John put down the milk, or Jessica is a cat, then Bernhard is a swan. It is impossible that if either John put down the milk, or Sumit is thirsty, then Brian is green.
hypothesis: Chances are about even that either Mary went to the garden, or Jessica is a cat.
valid_hypothesis: Chances are about even that either Mary went to the garden, or Jessica is a cat.
invalid_hypothesis: It is certain that either Mary went to the garden, or Jessica is a cat.
hypothesis_assertion: Either Mary went to the garden, or Jessica is a cat.