context: It is highly likely that Julius is a swan. Chances are about even that Lily is white. It is improbable that Mary moved to the office.
hypothesis: It is highly likely that mary moved to the office, and Lily is white.
valid_hypothesis: It is highly unlikely that mary moved to the office, and Lily is white.
invalid_hypothesis: It is highly likely that mary moved to the office, and Lily is white.
hypothesis_assertion: Mary moved to the office, and Lily is white.