Anchor: The Clean Air Act designates 156 national parks and wilderness areas as Class I areas for visibility protection.
Entailed: There are 156 national parks and wilderness areas designated for visibility protection.  
Contradiction: There are no national parks that need visibility protections.  
Contradiction: A guy in purple lifts weights.
Contradiction: A young lady walking down the street with long brown hair smiling
Contradiction: A man is standing outside a hole.
Contradiction: Children at school.