Anchor: a BMX rider sitting on a concrete ledge fixing his wheel, at the skate park.
Entailed: A person performing maintenance.
Contradiction: A skateboarder sets down his board below the bleachers.
Contradiction: MAST can be administered in less than 10 seconds.
Contradiction: I really think it's nice.
Contradiction: Two women are standing underneath the street light.
Contradiction: The shots were fired back to back.