Anchor: (Aristocrats are not part of the peasants' reference group.)
Entailed: A peasant's reference group does not include aristocrats.
Contradiction: Everybody is always in everybody's reference group.
Contradiction: A group of bicyclists fly down the mountain in a bike race.
Contradiction: The man stepped between the larger man's legs. 
Contradiction: The postal system doesn't have fixed costs.
Contradiction: People are posing for a photo.