Anchor: A very dirty man is sleeping on the step of a building.
Entailed: A homeless man is asleep on the steps of a building.
Contradiction: A man is sleeping in a hammock.
Contradiction: The Moors ruled southern Spain for only a decade.
Contradiction: A child shots a basketball.
Contradiction: The computer is incapable of doing anything for you. 
Contradiction: The attitude characteristic of some parts of the education community is one of the evolutionists.