context: It is certain that Julius is green. Chances are about even that Greg is a frog. It is certain that Lily is white.
hypothesis: It is impossible that either Julius is green, or Lily is white.
valid_hypothesis: It is impossible that either Julius is green, or Lily is white.
invalid_hypothesis: Chances are about even that either Julius is green, or Lily is white.
hypothesis_assertion: Either Julius is green, or Lily is white.