context: It is almost certain that John got the milk. It is probably the case that Brian is a lion. It is highly unlikely that Lily is a swan.
hypothesis: It is highly unlikely that brian is a lion, and Lily is a swan.
valid_hypothesis: It is highly unlikely that brian is a lion, and Lily is a swan.
invalid_hypothesis: It is probably the case that brian is a lion, and Lily is a swan.
hypothesis_assertion: Brian is a lion, and Lily is a swan.