Anchor: A group of construction workers wearing white hard hats, orange vests, and orange pants work at a site.
Entailed: A group of people are wearing hard hats.
Contradiction: A group of firemen are putting out a fire.
Contradiction: The dogs are black.
Contradiction: If the media slants news it will damage journalistic properties. 
Contradiction: Four businessmen hurry past a construction zone.
Contradiction: However, Dave wasn't strong enough to help very much.