context: It is certain that Mary is in the hallway. We doubt that Lily is a rhino. It is highly likely that Julius is a lion.
hypothesis: Chances are about even that julius is a lion, or Mary is in the hallway.
valid_hypothesis: It is certain that julius is a lion, or Mary is in the hallway.
invalid_hypothesis: Chances are about even that julius is a lion, or Mary is in the hallway.
hypothesis_assertion: Julius is a lion, or Mary is in the hallway.