context: It is impossible that Jessica is a cat. It is highly unlikely that Jeff went to the kitchen. It is unlikely that Mary dropped the milk. There is a very good chance that if Mary dropped the milk, or Jessica is a cat, then Brian is a lion. It is certain that if Jeff went to the kitchen, or Jessica is a cat, then Bernhard is a swan. It is highly unlikely that if either Mary dropped the milk, or Jeff went to the kitchen, then Sandra left the apple.
hypothesis: It is impossible that brian is a lion, and Jessica is a cat.
valid_hypothesis: It is impossible that brian is a lion, and Jessica is a cat.
invalid_hypothesis: There is a very good chance that brian is a lion, and Jessica is a cat.
hypothesis_assertion: Brian is a lion, and Jessica is a cat.