Question: Generate a question that has the following answer: 18 for the following movie plot: In 1922, 18-year old Salvador Dali (Robert Pattinson) arrives at university in Madrid. The Residencia de Estudiantes, or student residences, is a modern environment which encourages Spain's brightest young minds. Salvador, who is determined to become a great artist, soon catches the attention of the Resi's social elite poet Federico Garcia Lorca (Javier Beltran) and aspiring filmmaker Luis Bunuel (Matthew McNulty). Together they form the nucleus of the most modern group in Madrid. Their private lives become increasingly complex as Federico ignores the advances of devoted friend and writer Magdalena (Marina Gatell), and Salvador himself feels the pull of Garcia Lorca's magnetism. Luis, becoming increasingly isolated by the duo's closeness, decides to move to Paris to fulfill his own artistic ambitions. Meanwhile, Salvador and Federico leave Madrid to spend the summer at the seaside village of Cadaques, at the home of Dali's family. Federico finds himself accepted[1] into the Dali family as he and Salvador grow closer until, one night, their friendship becomes more.[2] Even as they draw closer, their relationship appears doomed. Luis visits them at university and becomes more suspicious and appalled by their apparent closeness. Dali finds Garcia Lorca's obsession with him more than he is prepared to handle and moves to Paris. Consumed by the high society and decadence, Dali is soon entangled with Gala (Arly Jover) a married woman with a penchant for celebrities. When Garcia Lorca visits, he finds his friend is a changed man, in his life and his politics.
Answer:
How old was Salvador Dali when he arrived at university in Madrid?