context: It is probable that Emily is a sheep. There is little chance that Lily is a lion. Chances are about even that Gertrude is a wolf. It is highly likely that if Lily is a lion, or Gertrude is a wolf, then Mary moved to the office. There is little chance that if either Emily is a sheep, or Gertrude is a wolf, then John discarded the apple. It is likely that if Lily is a lion, and Emily is a sheep, then Brian is gray.
hypothesis: Chances are slight that either John discarded the apple, or Brian is gray.
valid_hypothesis: Chances are slight that either John discarded the apple, or Brian is gray.
invalid_hypothesis: We believe that either John discarded the apple, or Brian is gray.
hypothesis_assertion: Either John discarded the apple, or Brian is gray.