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MADRID, MADRID - MARCH 04: Queen Letizia of Spain attends the 'Miguel de Cervantes: de La Vida Al Mito' opening exhibition at the National Library on March 4, 2016 in Madrid, Spain. (Photo by Ricardo Garcia - Pool/Getty Images)

MADRID, MADRID - MARCH 04:  Queen Letizia of Spain attends the 'Miguel de Cervantes: de La Vida Al Mito' opening exhibition at the National Library on March 4, 2016 in Madrid, Spain.  (Photo by Ricardo Garcia - Pool/Getty Images)