context: It is probably not the case that Lily is green. We believe that Mary is in the hallway. Chances are about even that Fred moved to the office.
hypothesis: It is unlikely that mary is in the hallway, and Lily is green.
valid_hypothesis: It is unlikely that mary is in the hallway, and Lily is green.
invalid_hypothesis: We believe that mary is in the hallway, and Lily is green.
hypothesis_assertion: Mary is in the hallway, and Lily is green.