Anchor: Also, the fact that mail-order retailers run out of their most popular items shouldn't be much of a surprise.
Entailed: Mail-order retailers sometimes struggle to keep their most popular items in stock. 
Contradiction: Mail-order retailers are sure to order more of their most popular items to insure that they never run out of stock. 
Contradiction: Two swimmers compete in a diving match.
Contradiction: The coast of North Africa is closer to Ibiza than the Catalonian city of Barcelona.
Contradiction: They wanted to go viral.
Contradiction: I had a soft spot for you, but you were still an annoyance.