Anchor: More salt mining required more salt miners.
Entailed: Additional salt miners are need if more salt mining is to be done.
Contradiction: Fewer salt miners were needed.
Contradiction: Petit Trianon was the same size at the biggest building of Versailles.
Contradiction: Kids in the audience.
Contradiction: There is clearly a winner and a loser. 
Contradiction: This structure was the tallest one in the world.