context: It is certain that John went to the garden. It is probably not the case that Emily is a cat. There is a very good chance that Brian is a swan.
hypothesis: We doubt that either Brian is a swan, or John went to the garden.
valid_hypothesis: We doubt that either Brian is a swan, or John went to the garden.
invalid_hypothesis: It is probably the case that either Brian is a swan, or John went to the garden.
hypothesis_assertion: Either Brian is a swan, or John went to the garden.