Anchor: Skateboarder jumping down a short flight of stairs in a dimly lit warehouse.
Entailed: A skateboarder is jumping.
Contradiction: An iceskater is doing circles on the ice.
Contradiction: Audits and evaluations have proven to be ineffective in uncovering wrongdoing.
Contradiction: A man walks by as the woman leans over.
Contradiction: There are absolutely zero unquantified benefits for ozone and PM. 
Contradiction: A dog walks on some grass.