Anchor: First, they should deliver maximum moral benefit at minimum practical cost.
Entailed: They need to give the best ethical response without too much work.
Contradiction: They should do all the work required to deliver the worse moral response.
Contradiction: Edinburgh never emerged as a political center and instead remained an anarcho-sydicalist commune. 
Contradiction: The women are dancing.
Contradiction: A man is jogging in the park.
Contradiction: That is wrong.