context: It is certain that Lily is white. We doubt that Mary went to the office. We doubt that Brian is a frog.
hypothesis: It is probably the case that lily is white, and Brian is a frog.
valid_hypothesis: It is unlikely that lily is white, and Brian is a frog.
invalid_hypothesis: It is probably the case that lily is white, and Brian is a frog.
hypothesis_assertion: Lily is white, and Brian is a frog.