Anchor: All centers are affiliated with one of the major certifying bodies, with PADI (Professional Association of Diving Instructors) being the most common.
Entailed: Every center is certified by an official association. 
Contradiction: None of the centers are certified, it is a gamvke to go. 
Contradiction: A little girl playing a board game.
Contradiction: The English are known for some bad stereotypes. 
Contradiction: I never knew that you used drugs.
Contradiction: A child is playing baseball.