context: It is likely that Fred is in the park. There is a very good chance that Mary got the apple. It is impossible that Bill went to the garden.
hypothesis: We doubt that either Fred is in the park, or Bill went to the garden.
valid_hypothesis: It is probably the case that either Fred is in the park, or Bill went to the garden.
invalid_hypothesis: We doubt that either Fred is in the park, or Bill went to the garden.
hypothesis_assertion: Either Fred is in the park, or Bill went to the garden.