context: It is probable that Mary moved to the garden. We doubt that Bernhard is a swan. It is probably the case that John dropped the milk.
hypothesis: It is improbable that john dropped the milk, and Bernhard is a swan.
valid_hypothesis: It is improbable that john dropped the milk, and Bernhard is a swan.
invalid_hypothesis: It is certain that john dropped the milk, and Bernhard is a swan.
hypothesis_assertion: John dropped the milk, and Bernhard is a swan.