context: It is certain that Greg is a swan. It is impossible that Bernhard is green. There is a better than even chance that Lily is yellow.
hypothesis: There is a better than even chance that either Bernhard is green, or Lily is yellow.
valid_hypothesis: There is a better than even chance that either Bernhard is green, or Lily is yellow.
invalid_hypothesis: It is impossible that either Bernhard is green, or Lily is yellow.
hypothesis_assertion: Either Bernhard is green, or Lily is yellow.