Anchor: Rollerbladers roll in formation down a hill.
Entailed: The rollerbladers are outside.
Contradiction: The rollerbladers are going up a hill.
Contradiction: No one cares about Starr's report to Congress and everyone chooses to ignore it. 
Contradiction: Human factors. 
Contradiction: A man closes his eyes at night.
Contradiction: A man dressed in blue selling things on the street.