Anchor: She was chagrined at The Nation 's recent publication of a column by conservative education activist Ron Unz arguing that liberal education reform has been an unmitigated failure.
Entailed: She did not like the column by Ron Unz. 
Contradiction: She agrees that liberal education reform has been an unmitigated failure.
Contradiction: Cafe con leche is 100% black coffee.
Contradiction: The boy plays by the beach
Contradiction: Susan, don't bother with him.
Contradiction: A child is in a bed.