context: It is almost certain that Greg is a lion. It is likely that Mary went to the kitchen. There is a very good chance that Lily is white. We believe that if Lily is white, and Greg is a lion, then Julius is gray. It is improbable that if Greg is a lion, and Lily is white, then Sandra left the football. It is certain that if Mary went to the kitchen, and Greg is a lion, then Bernhard is a lion.
hypothesis: There is a better than even chance that julius is gray, and Lily is white.
valid_hypothesis: There is a better than even chance that julius is gray, and Lily is white.
invalid_hypothesis: It is impossible that julius is gray, and Lily is white.
hypothesis_assertion: Julius is gray, and Lily is white.