context: We believe that Lily is white. We doubt that John grabbed the milk. There is little chance that Mary discarded the milk.
hypothesis: It is likely that either Mary discarded the milk, or Lily is white.
valid_hypothesis: It is likely that either Mary discarded the milk, or Lily is white.
invalid_hypothesis: It is unlikely that either Mary discarded the milk, or Lily is white.
hypothesis_assertion: Either Mary discarded the milk, or Lily is white.