Anchor: A man rollerblading on a metal bar.
Entailed: Someone rollerblading across a bar.
Contradiction: A woman rollerblading through the park.
Contradiction: The joke did not contain a trace of blasphemy.
Contradiction: There are a lot of drugs and everything else these days.
Contradiction: You would never think that a taste for such ascetic modes of enjoyment would be as effective as a diet strategy making people fatter.  
Contradiction: I said that it would be hard to get the murderer convicted.