context: It is improbable that Mary is in the hallway. Chances are about even that Brian is a rhino. It is probably not the case that Greg is green.
hypothesis: It is probable that brian is a rhino, and Mary is in the hallway.
valid_hypothesis: It is highly unlikely that brian is a rhino, and Mary is in the hallway.
invalid_hypothesis: It is probable that brian is a rhino, and Mary is in the hallway.
hypothesis_assertion: Brian is a rhino, and Mary is in the hallway.