Anchor: Set in the floor by the central door is the large round slab of red porphyry where King Charlemagne knelt for his coronation as emperor in the year 800 .
Entailed: King Charlemagne had to kneel for his coronation in 800 AD.
Contradiction: The porphyry in the floor is colored blue.
Contradiction: You know, that seems really ordinary. 
Contradiction: We have not paid much attention to Latin America.
Contradiction: The relation between savings and income is unprecedented.
Contradiction: People playing instruments on state.