Anchor: A man is rollerblading down a handrail on some stairs.
Entailed: A man is using his feet to move down a handrail.
Contradiction: A man is sitting at a comedy show laughing.
Contradiction: People are out on a street in protest with rocks and tear gas.
Contradiction: I received a sum of nine thousand dollars in exchange for teaching for a year. 
Contradiction: There is no concrete in the city.
Contradiction: boyls can climb