Anchor: Amidst a bevy of beach towns is gritty San Pedro, a working seaport that borders Los Angeles Harbor and the largest man-made port in the world.
Entailed: San Pedro is the largest artificial port in the world.
Contradiction: San Pedro is a very modest port and mostly serves as a tourist attraction.
Contradiction: The central group only tracks volume, not frequent.
Contradiction: I can definitely agree with you on that point.
Contradiction: The Indians never retrieved their heritage. 
Contradiction: a girl is creating an edible house