Question: What is the Spanish ballet dancer who starred in The Sandman the artistic director of?

full_context: Document 1: Swan Lake (Bourne): Matthew Bourne's "Swan Lake" was first staged at Sadler's Wells theatre in London in 1995. The longest running ballet in London's West End and on Broadway, it has been performed in the UK, Los Angeles, Europe, Australia, South Korea, Japan, Israel and Singapore. The story is based on the Russian romantic ballet "Swan Lake", from which it takes the music by Tchaikovsky and the broad outline of the plot. Bourne's rendering is best known for having the traditionally female parts of the swans danced by men.
Document 2: Brothers Quay: Stephen and Timothy Quay ( ; born June 17, 1947) are American identical twin brothers better known as the Brothers Quay or Quay Brothers. They are influential stop-motion animators. They are also the recipients of the 1998 Drama Desk Award for Outstanding Set Design for their work on the play "The Chairs".
Document 3: Alicia Markova: Dame Alicia Markova DBE (1 December 1910 – 2 December 2004) was an English ballerina and a choreographer, director and teacher of classical ballet. Most noted for her career with Sergei Diaghilev's Ballets Russes and touring internationally, she was widely considered to be one of the greatest classical ballet dancers of the twentieth century. She was the first British dancer to become the principal dancer of a ballet company and, with Dame Margot Fonteyn, is one of only two English dancers to be recognised as a prima ballerina assoluta. Markova was a founder dancer of the Rambert Dance Company, The Royal Ballet and American Ballet Theatre, and was co-founder and director of the English National Ballet.
Document 4: Margot Fonteyn: Dame Margot Fonteyn de Arias, DBE (18 May 191921 February 1991), was an English ballerina. She spent her entire career as a dancer with the Royal Ballet, eventually being appointed "Prima Ballerina Assoluta" of the company by Queen Elizabeth II.
Document 5: Sandman Midnight Theatre: Sandman Midnight Theatre is the title of a one-shot comic book in which two DC comics characters called the Sandman — Dream and Wesley Dodds — encounter each other. "Sandman Midnight Theatre" was co-written by "Sandman Mystery Theatre" author Matt Wagner (co-plot) and "The Sandman" author Neil Gaiman (co-plot/script), and featured painted artwork by Teddy Kristiansen and lettering by Todd Klein. It received the Comics Buyer's Guide Fan Award for Favorite Original Graphic Novel/Album for 1996.
Document 6: Nocturna Artificialia: Nocturna Artificialia is the first credited film directed and produced by the Brothers Quay, Timothy and Stephen. "This British fraternal directing team is known for their avant-garde puppet films." Rather than dialog, this film uses shadows and music to create the dream-like state of the main character and his journey on a red tram at night.
Document 7: Tamara Rojo: Tamara Rojo CBE (born 17 May 1974) is a Spanish ballet dancer. She is the artistic director of the English National Ballet, as well as a lead principal dancer. She was previously a principal dancer with The Royal Ballet, and continues to perform with the company as a guest artist.
Document 8: English National Ballet: English National Ballet is a classical ballet company founded by Dame Alicia Markova and Sir Anton Dolin and based at Markova House in South Kensington, London, England. Along with The Royal Ballet, Birmingham Royal Ballet and Scottish Ballet, it is one of the four major ballet companies in Great Britain. English National Ballet is one of the foremost touring companies in Europe, performing in theatres throughout the UK as well as conducting international tours and performing at special events. The Company employs approximately 67 dancers and a symphony orchestra, (English National Ballet Philharmonic) and there is also an associate school, English National Ballet School, which is independent from the ballet company. The Company regularly performs seasons at the London Coliseum and has been noted for specially staged performances at the Royal Albert Hall. In 2014 English National Ballet became an Associate Company of Sadler's Wells. The Patron of English National Ballet is HRH The Duke of York.
Document 9: The Sandman (Vertigo): The Sandman is a comic book series written by Neil Gaiman and published by DC Comics. Its artists include Sam Kieth, Mike Dringenberg, Jill Thompson, Shawn McManus, Marc Hempel, and Michael Zulli, with lettering by Todd Klein and covers by Dave McKean. Beginning with issue No. 47, it was placed under the Vertigo imprint. It tells the story of Dream of the Endless, who rules over the world of dreams. The original series ran for 75 issues from January 1989 to March 1996.
Document 10: Roberto Bolle: Roberto Bolle (Casale Monferrato, March 26, 1975) is an Italian danseur. He is currently a "principal dancer" with the American Ballet Theatre and a principal dancer "étoile" at La Scala Theatre Ballet. Bolle also dances regularly as a guest artist with the world’s leading companies, including The Royal Ballet, the Mariinsky Ballet, the Bolshoi Ballet and the Paris Opera Ballet.
Document 11: Darcey Bussell: Darcey Andrea Bussell CBE (born Marnie Mercedes Darcey Pemberton Crittle 27 April 1969) is a retired English ballerina, and is currently one of the four judges on the BBC reality show "Strictly Come Dancing".
Document 12: The Sandman: The Dream Hunters: "The Sandman: The Dream Hunters" is a novella by English author Neil Gaiman, illustrated by Yoshitaka Amano. The story is tangential to "The Sandman" comic book series, and can be read without prior knowledge of the main sequence. It won the Bram Stoker Award for Best Illustrated Narrative. The story deals with a love affair between a Buddhist monk and a fox spirit or kitsune.
Document 13: Institute Benjamenta: Institute Benjamenta, or This Dream People Call Human Life, released in 1996, was the first feature-length film by the Brothers Quay, produced by Keith Griffiths and Janine Marmot. It is based on "Jakob von Gunten", a novel written by Robert Walser. It stars Mark Rylance, Alice Krige, and Gottfried John.
Document 14: The Sandman (2000 film): The Sandman is a 2000 dance film made by the Brothers Quay and William Tuckett. A televised ballet, it starsTamara Rojo, Irek Mukhamedov, Zenaida Yanowsky, and Heathcote Williams. It is loosely based on E. T. A. Hoffmann's story "The Sandman".
Document 15: Lydia Díaz Cruz: Lydia Diaz Cruz is a Prima Ballerina who started dancing in Havana, Cuba, and trained with Fernando Alonso and Alicia Alonso. As a young dancer, she was talent-spotted by a well-known British dancer and teacher from an earlier era, Dame Phyllis Bedells, who traveled to Cuba and regarded her as the most naturally gifted dancer she'd seen since Margot Fonteyn. Early marriage and exile from Cuba in the wake of the Castro revolution put a halt to her career, which she resumed after the birth of her third child in the early sixties. She went on to dance in the United States with Ballet Concerto in Miami, became principal dancer with the National Ballet of Washington, D.C., and has performed in principal guest roles with the National Ballet of Venezuela, Washington Ballet, Ballet Spectacular. She danced alongside many of the great artists of the day, including Margot Fonteyn and Melissa Hayden, among many others.
ground_truth: the English National Ballet