context: It is probably not the case that Sandra left the football. It is certain that John moved to the garden. It is probably not the case that Lily is a frog. We doubt that if John moved to the garden, or Lily is a frog, then Jeff discarded the milk. It is improbable that if John moved to the garden, and Lily is a frog, then Brian is white. There is a better than even chance that if either Lily is a frog, or John moved to the garden, then Mary went to the office.
hypothesis: Chances are about even that jeff discarded the milk, or Lily is a frog.
valid_hypothesis: Chances are about even that jeff discarded the milk, or Lily is a frog.
invalid_hypothesis: It is highly unlikely that jeff discarded the milk, or Lily is a frog.
hypothesis_assertion: Jeff discarded the milk, or Lily is a frog.