Anchor: Two people walking a dog on a beach in cold attire.
Entailed: A dog is being walked by two people.
Contradiction: The dog is on the beach in sweatsuit.
Contradiction: Someone works on a blue bird house.
Contradiction: The Pyrenees structure dates back to the 16th century. 
Contradiction: The kid is playing frisbee at the park.
Contradiction: The four kids were at the pool.