context: We doubt that Brian is a rhino. There is a very good chance that Lily is white. There is a very good chance that John went to the hallway.
hypothesis: It is impossible that brian is a rhino, or John went to the hallway.
valid_hypothesis: There is a very good chance that brian is a rhino, or John went to the hallway.
invalid_hypothesis: It is impossible that brian is a rhino, or John went to the hallway.
hypothesis_assertion: Brian is a rhino, or John went to the hallway.