Anchor: Granted, the Web is not yet a picture of efficiency itself.
Entailed: The World Wide Web is not yet as efficient as it could be. 
Contradiction: The Web is a perfect picture of efficiency.
Contradiction: The man is getting ready to drop into the half-pipe on his skateboard for the first time.
Contradiction: The man is quite pleasant.
Contradiction: The internet has made it hard to comunicate with other people.
Contradiction: children are at the fair