Anchor: Visitors can stand in the dry bed of the old moat, traverse imaginative gangways over the encroaching river (the Poddle, not the Liffey), and view the stairs where boats once brought provisions to the castle.
Entailed: Boats once would bring provisions to the castle. `
Contradiction: The moat was used for self defense only and served no other purpose. 
Contradiction: The man is sitting with his family at the park.
Contradiction: There are two people sitting on the same type of seating arrangement.
Contradiction: He ignored the riders.
Contradiction: I imagined that John and Mary would look after her until the end of the war.