context: It is certain that Bernhard is a swan. We doubt that Mary went to the garden. There is a very good chance that Emily is a sheep.
hypothesis: We believe that emily is a sheep, and Mary went to the garden.
valid_hypothesis: It is unlikely that emily is a sheep, and Mary went to the garden.
invalid_hypothesis: We believe that emily is a sheep, and Mary went to the garden.
hypothesis_assertion: Emily is a sheep, and Mary went to the garden.