context: It is highly likely that Lily is a lion. There is almost no chance that Julius is a rhino. It is almost certain that Jessica is a cat. Chances are about even that if Lily is a lion, or Julius is a rhino, then Brian is white. It is likely that if Lily is a lion, and Julius is a rhino, then Bernhard is a swan. It is almost certain that if Jessica is a cat, and Lily is a lion, then Mary went to the kitchen.
hypothesis: Chances are about even that lily is a lion, and Brian is white.
valid_hypothesis: Chances are about even that lily is a lion, and Brian is white.
invalid_hypothesis: It is highly unlikely that lily is a lion, and Brian is white.
hypothesis_assertion: Lily is a lion, and Brian is white.