Anchor: Over a period of many centuries crucial in Spanish history, Madrid's significance was negligible.
Entailed: Madrid was not always very important to Spanish history. 
Contradiction: Madrud was always involves in the important parts of Spanish history. 
Contradiction: La Villette is in the southwest corner of the city (metro Porte de la Vignette).
Contradiction: There was an exchange of lands for Cavour.
Contradiction: The discovery didn't hit him as hard as most.
Contradiction: Ballerinas dressed in red perform.