context: There is a very good chance that Emily is a sheep. It is probable that Mary left the milk. Chances are about even that Brian is yellow.
hypothesis: Chances are about even that emily is a sheep, and Brian is yellow.
valid_hypothesis: Chances are about even that emily is a sheep, and Brian is yellow.
invalid_hypothesis: It is certain that emily is a sheep, and Brian is yellow.
hypothesis_assertion: Emily is a sheep, and Brian is yellow.