context: It is almost certain that Brian is white. It is highly unlikely that Lily is a frog. It is impossible that Bernhard is a frog. There is a better than even chance that if Lily is a frog, or Brian is white, then John left the football. There is almost no chance that if Brian is white, and Lily is a frog, then Mary put down the milk. It is almost certain that if either Brian is white, or Bernhard is a frog, then Greg is green.
hypothesis: It is unlikely that either Greg is green, or Lily is a frog.
valid_hypothesis: It is highly likely that either Greg is green, or Lily is a frog.
invalid_hypothesis: It is unlikely that either Greg is green, or Lily is a frog.
hypothesis_assertion: Either Greg is green, or Lily is a frog.