Anchor: Fortunately, most of the favourite beaches are well protected from waves and undertow, and slope gradually.
Entailed: The best beaches have gradual slopes and are protected from undertow.
Contradiction: The most popular beaches have steep drop offs and big waves.
Contradiction: There is no question I am asking you right now.
Contradiction: There was once a bird there.
Contradiction: The impact didn't effect him at all. 
Contradiction: This man can do tricks on a bike.