context: It is highly likely that Lily is yellow. It is probable that Julius is a rhino. We believe that Mary moved to the office. Chances are slight that if Lily is yellow, or Mary moved to the office, then Bernhard is a lion. It is likely that if Julius is a rhino, or Mary moved to the office, then Greg is white. It is probably not the case that if Lily is yellow, and Julius is a rhino, then Fred went to the kitchen.
hypothesis: It is almost certain that mary moved to the office, and Greg is white.
valid_hypothesis: Chances are about even that mary moved to the office, and Greg is white.
invalid_hypothesis: It is almost certain that mary moved to the office, and Greg is white.
hypothesis_assertion: Mary moved to the office, and Greg is white.