context: A member of the army is walking with a German Shepard while the dog has something in has mouth.
hypothesis: There is a very good chance that a member of the army walks his dog.
valid_hypothesis: There is a very good chance that a member of the army walks his dog.
invalid_hypothesis: It is probably not the case that a member of the army walks his dog.
hypothesis_assertion: A member of the army walks his dog.