context: It is unlikely that Lily is green. There is a very good chance that Greg is white. It is certain that Brian is a swan.
hypothesis: There is a very good chance that greg is white, and Brian is a swan.
valid_hypothesis: There is a very good chance that greg is white, and Brian is a swan.
invalid_hypothesis: We doubt that greg is white, and Brian is a swan.
hypothesis_assertion: Greg is white, and Brian is a swan.