context: There is almost no chance that Lily is a rhino. It is unlikely that Mary got the milk. There is a better than even chance that Sumit is thirsty. It is improbable that if Lily is a rhino, or Sumit is thirsty, then Jeff moved to the office. We doubt that if either Mary got the milk, or Sumit is thirsty, then John discarded the milk. Chances are about even that if Sumit is thirsty, and Lily is a rhino, then Bill is in the school.
hypothesis: It is probable that either John discarded the milk, or Mary got the milk.
valid_hypothesis: It is probably not the case that either John discarded the milk, or Mary got the milk.
invalid_hypothesis: It is probable that either John discarded the milk, or Mary got the milk.
hypothesis_assertion: Either John discarded the milk, or Mary got the milk.