Anchor: A clown is smiling for a picture during a parade.
Entailed: There is a clown in the parade.
Contradiction: A clown juggles at the children's birthday party.
Contradiction: If an employee arrives 30 minutes late and doesn't work 30 minutes past the planned departure time, this would be considered an immaterial variation 
Contradiction: A man is on a bicycle at a stoplight.
Contradiction: A man showing off his dance moves on the floor.
Contradiction: The African-American Museum is located at 600 State Drive.