context: It is improbable that Greg is green. Chances are slight that Lily is a lion. It is highly likely that Brian is a swan.
hypothesis: It is highly likely that brian is a swan, and Lily is a lion.
valid_hypothesis: It is improbable that brian is a swan, and Lily is a lion.
invalid_hypothesis: It is highly likely that brian is a swan, and Lily is a lion.
hypothesis_assertion: Brian is a swan, and Lily is a lion.