context: Chances are slight that Lily is a swan. There is a very good chance that Sumit is bored. There is a very good chance that Julius is white. We believe that if Lily is a swan, and Sumit is bored, then Bernhard is a rhino. There is a very good chance that if either Lily is a swan, or Julius is white, then Greg is yellow. It is highly unlikely that if either Sumit is bored, or Lily is a swan, then Mary went to the hallway.
hypothesis: It is impossible that greg is yellow, and Julius is white.
valid_hypothesis: There is a better than even chance that greg is yellow, and Julius is white.
invalid_hypothesis: It is impossible that greg is yellow, and Julius is white.
hypothesis_assertion: Greg is yellow, and Julius is white.