Task: Question Answering
Input (English): Passage: The first recording of L'incoronazione, with Walter Goehr conducting the Tonhalle-Orchester Zürich in a live stage performance, was issued in 1954. This LP version, which won a Grand Prix du Disque in 1954, is the only recording of the opera that predates the revival of the piece that began with the 1962 Glyndebourne Festival production. In 1963 Herbert von Karajan and the Vienna Staatsoper issued a version described by Gramophone as "far from authentic", while the following year John Pritchard and the Royal Philharmonic Orchestra recorded an abridged version using Leppard's Glyndebourne orchestration. Leppard conducted a Sadler's Wells production, which was broadcast by the BBC and recorded on 27 November 1971. This is the only recording of the opera in English.Nikolaus Harnoncourt's 1974 version, the first recording without cuts, used period instruments in an effort to achieve a more authentic sound, although Denis Arnold has criticised Harnoncourt's "over-ornamentation" of the score, particularly his use of oboe and trumpet flourishes. Arnold showed more enthusiasm for Alan Curtis's 1980 recording, live from La Fenice in Venice. Curtis uses a small band of strings, recorders and continuo, with a trumpets reserved for the final coronation scene. Subsequent recordings have tended to follow the path of authenticity, with versions from baroque specialists including Richard Hickox and the City of London Baroque Sinfonia (1988), René Jacobs and Concerto Vocale (1990), and John Eliot Gardiner with the English Baroque Soloists. Sergio Vartolo's production of the opera at Pigna, Corsica, was recorded for Brilliant Classics in 2004. A feature of this recording is the casting of a soprano Nerone in acts I and III, and a tenor Nerone in act II, to allow for the differing vocal requirements of the role in these acts. Vartolo accepts that "a staged performance would almost certainly require a different approach".In more recent years, videotape and DVD versions have proliferated. The first was in 1979, a version directed by Harnoncourt with the Zurich Opera and chorus. Leppard's second Glyndebourne production, that of 1984, was released in DVD form in 2004.  Since then, productions directed by Jacobs, Christophe Rousset and Marc Minkowski have all been released on DVD, along with Emmanuelle Haïm's 2008 Glyndebourne production in which the Festival finally rejects Leppard's big band version in favour of Haim's period instruments, to give an experience closer to that of the original audience. The 2010 production at the Teatro Real in Madrid, conducted by William Christie, was released on DVD in 2012. 
Question: What is the last name of the person who conducted the 2010 production of L'incoronazione?
Output (English): Christie.