Question: When did the relationship between Carlos Leon and the person who played Eva Peron in Evita end?

full_context: Document 1: Madonna (entertainer): Madonna Louise Ciccone (/tʃɪˈkoʊni/; Italian: [tʃikˈkoːne]; born August 16, 1958) is an American singer, songwriter, actress, and businesswoman. She achieved popularity by pushing the boundaries of lyrical content in mainstream popular music and imagery in her music videos, which became a fixture on MTV. Madonna is known for reinventing both her music and image, and for maintaining her autonomy within the recording industry. Music critics have acclaimed her musical productions, which have generated some controversy. Often referred to as the "Queen of Pop", she is often cited as an influence by other artists.
Document 2: Madonna (entertainer): After its release, Evita garnered critical appreciation. Zach Conner from Time magazine commented, "It's a relief to say that Evita is pretty damn fine, well cast and handsomely visualized. Madonna once again confounds our expectations. She plays Evita with a poignant weariness and has more than just a bit of star quality. Love or hate Madonna-Eva, she is a magnet for all eyes." Madonna won a Golden Globe Award for Best Actress in Motion Picture Musical or Comedy for the role. She released three singles from the Evita soundtrack album, including "You Must Love Me" (which won an Academy Award for Best Original Song in 1997) and "Don't Cry for Me Argentina". Madonna was later presented with the Artist Achievement Award by Tony Bennett at the 1996 Billboard Music Awards. On October 14, 1996, Madonna gave birth to Lourdes Maria Ciccone Leon, her daughter with Leon. Biographer Mary Cross writes that although Madonna was often ill during the filming and worried that her pregnancy would harm the film, she reached some important personal goals: "Now 38 years old, Madonna had at last triumphed on screen and achieved her dream of having a child, both in the same year. She had reached another turning point in her career, reinventing herself and her image with the public." Her relationship with Carlos Leon ended in May 1997; she declared that they were "better off as best friends." After Lourdes' birth, Madonna became involved in Eastern mysticism and Kabbalah. She was introduced to Jewish mysticism by actress Sandra Bernhard in 1997.
Document 3: Evita (1996 film): Evita is a 1996 American musical drama film based on the 1976 concept album of the same name produced by Tim Rice and Andrew Lloyd Webber, which also inspired a 1978 musical. The film depicts the life of Eva Perón, detailing her beginnings, rise to fame, political career and death at the age of 33. Directed by Alan Parker, and written by Parker and Oliver Stone, Evita stars Madonna as Eva, Jonathan Pryce as Eva's husband Juan Perón, and Antonio Banderas as Ché, an everyman who acts as the film's narrator.
Document 4: Madonna (entertainer): Madonna is dedicated to Kabbalah, and in 2004 she adopted the name Esther which in Persian means "star". She has donated millions of dollars to New York and London schools teaching the subject. She faced opposition from rabbis who felt Madonna's adoption of the Kabbalah was sacrilegious and a case of celebrity dilettantism. Madonna defended her studies, saying: "It would be less controversial if I joined the Nazi Party", and that her involvement with the Kabbalah is "not hurting anybody". The influence of the Kabbalah was subsequently observed in Madonna's music, especially albums like Ray of Light and Music. During the Re-Invention World Tour, at one point in the show, Madonna and her dancers wore T-shirts that read "Kabbalists Do It Better". Her 2012 MDNA album has also drawn many influences from her Catholic upbringing, and since 2011 she has been attending meetings and services at an Opus Dei center, a Catholic institution that encourages spirituality through every day life.
Document 5: Elaine Paige: Following a number of roles over the next decade, Paige was selected to play Eva Perón in the first production of Evita in 1978, which brought her to the attention of the broader public. For this role, she won the Laurence Olivier Award for Performance of the Year in a musical. She went on to originate the role of Grizabella in Cats and had a Top 10 hit with ``Memory '', a song from the show. In 1985, Paige released`` I Know Him So Well'' with Barbara Dickson from the musical Chess, which remains the biggest - selling record by a female duo. She then appeared in the original stage production of Chess, followed by a starring role in Anything Goes which she also co-produced. Paige made her Broadway debut in Sunset Boulevard in 1996, playing the lead role of Norma Desmond, to critical acclaim. She appeared in The King and I from 2000 to 2001, and six years later she returned to the West End stage in The Drowsy Chaperone. She has also worked sporadically in television.
Document 6: Madonna (entertainer): Madonna's popularity was further enhanced by her film roles, including Desperately Seeking Susan (1985), Dick Tracy (1990), and Evita (1996); the latter earned her a Golden Globe Award for Best Actress. However, most of her other films have been panned by critics. Her other ventures include fashion design, writing children's books, and filmmaking. She has been acclaimed as a businesswoman, particularly after she founded entertainment company Maverick (including the label Maverick Records). In 2007 she signed an unprecedented US $120 million 360 deal with Live Nation.
Document 7: Don't Cry for Me Argentina: ``Do n't Cry for Me Argentina ''is a song recorded by Julie Covington for the 1976 concept album, Evita, and was later included in the 1978 musical of the same name. The song was written and composed by Andrew Lloyd Webber and Tim Rice while they were researching the life of Argentinian leader Eva Perón. It appeared at the opening and near the end of the show, initially as the spirit of the dead Eva exhorting the people of Argentina not to mourn her, and finally during Eva's speech from the balcony of the Casa Rosada. Covington was signed by the songwriters for the track, based on her previous work in musicals.
Document 8: Op zoek naar Evita: Op zoek naar Evita ("Looking for Evita") was a 2007 talent show-themed television series produced by the AVRO in the Netherlands. It documented the search for a new, undiscovered musical theatre performer to play the role of Eva Peron in the 2008 Andrew Lloyd Webber musical Evita.
Document 9: Madonna (entertainer): In Evita (1996), Madonna played the title role of Eva Perón. For a long time, Madonna had desired to play Perón and wrote to director Alan Parker to explain why she would be perfect for the part. She said later, "This is the role I was born to play. I put everything of me into this because it was much more than a role in a movie. It was exhilarating and intimidating at the same time..... And I am prouder of Evita than anything else I have done." After securing the role, she had vocal training and learned about the history of Argentina and Perón. During shooting she became ill several times due to the intense emotional effort required. However, as she told Oprah, she was also pregnant during the filming: "I was winded after every take. I had to lie on the couch every ten minutes so I could recover from dizzy spells, I was worried that I was shaking the baby around too much and that would injure it in some way." Madonna wrote in her personal diary at the time: "Ironically, this feeling of vulnerability and weakness is helping me in the movie. I'm sure Evita felt this way every day of her life once she discovered she was ill."
Document 10: Madonna (entertainer): Besides singing Madonna has the ability to play several musical instruments. She learned to play drum and guitar from her then-boyfriend Dan Gilroy in the late 1970s before joining the Breakfast Club line-up as the drummer. This helped her to form the band Emmy, where she performed as the guitarist and lead vocalist. Madonna later played guitar on her demo recordings. On the liner notes of Pre-Madonna, Stephen Bray wrote: "I've always thought she passed up a brilliant career as a rhythm guitarist." After her career breakthrough, Madonna focused mainly in singing but was also credited for playing cowbell on Madonna (1983) and synthesizer on Like a Prayer (1989). In 1999, Madonna had studied for three months to play the violin for the role as a violin teacher in the film Music of the Heart, before eventually leaving the project. After two decades, Madonna decided to perform with guitar again during the promotion of Music (2000). She took further lessons from guitarist Monte Pittman to improve her guitar skill. Since then Madonna has played guitar on every tour, as well as her studio albums. At the 2002 Orville H. Gibson Guitar Awards, she received nomination for Les Paul Horizon Award, which honors the most promising up-and-coming guitarist.
Document 11: Madonna (entertainer): Life with My Sister Madonna, a book by Madonna's brother Christopher, debuted at number two on The New York Times bestseller list. The book caused some friction between Madonna and her brother, because of the unsolicited publication. Problems also arose between Madonna and Ritchie, with the media reporting that they were on the verge of separation. Ultimately, Madonna filed for divorce from Ritchie, citing irreconcilable differences, which was finalized in December 2008. She decided to adopt from Malawi. The country's High Court initially approved the adoption of Chifundo "Mercy" James; however, the application was rejected because Madonna was not a resident of the country. Madonna appealed, and on June 12, 2009, the Supreme Court of Malawi granted Madonna the right to adopt Mercy James. She also released Celebration, her third greatest-hits album and final release with Warner. It contained the new songs "Celebration" and "Revolver" along with 34 hits spanning her career. Celebration reached number one in the UK, tying her with Elvis Presley as the solo act with most number one albums in the British chart history. She appeared at the 2009 MTV Video Music Awards on September 13, 2009, to speak in tribute to deceased pop star Michael Jackson.
Document 12: Madonna (entertainer): Possessing a mezzo-soprano vocal range, Madonna has always been self-conscious about her voice, especially in comparison to her vocal idols such as Ella Fitzgerald, Prince, and Chaka Khan. Mark Bego, author of Madonna: Blonde Ambition, called her "the perfect vocalist for lighter-than-air songs", despite not being a "heavyweight talent." According to MSNBC critic Tony Sclafani, "Madonna's vocals are the key to her rock roots. Pop vocalists usually sing songs "straight," but Madonna employs subtext, irony, aggression and all sorts of vocal idiosyncrasies in the ways John Lennon and Bob Dylan did." Madonna used a bright, girlish vocal timbre in her early albums which became passé in her later works. The change was deliberate since she was constantly reminded of how the critics had once labelled her as "Minnie Mouse on helium". During the filming of Evita, Madonna had to take vocal lessons, which increased her range further. Of this experience she commented, "I studied with a vocal coach for Evita and I realized there was a whole piece of my voice I wasn't using. Before, I just believed I had a really limited range and was going to make the most of it."
Document 13: Don't Cry for Me Argentina: ``Do n't Cry for Me Argentina ''was written by Andrew Lloyd Webber and Tim Rice while they were developing Evita for Broadway in 1976. Both were extremely intrigued by the stories surrounding the life of Eva Perón while researching about her during the mid-1970s. Evita was initially produced as an album, before being adapted for the stage, following a formula that Lloyd Webber and Rice had employed during the production of Jesus Christ Superstar, their previous musical. The duo had written the songs for a female singer with good vocals.
Document 14: Madonna (entertainer): Madonna's music has been the subject of much analysis and scrutiny. Robert M. Grant, author of Contemporary Strategy Analysis (2005), commented that what has brought Madonna success is "certainly not outstanding natural talent. As a vocalist, musician, dancer, songwriter, or actress, Madonna's talents seem modest." He asserts Madonna's success is in relying on the talents of others, and that her personal relationships have served as cornerstones to the numerous reinventions in the longevity of her career. Madonna's approach was far from the music industry wisdom of "Find a winning formula and stick to it." Her musical career has been a continuous experimentation with new musical ideas and new images and a constant quest for new heights of fame and acclaim. Grant concluded that "having established herself as the queen of popular music, Madonna did not stop there, but continued re-inventing." Musicologist Susan McClary wrote that "Madonna's art itself repeatedly deconstructs the traditional notion of the unified subject with finite ego boundaries. Her pieces explore various ways of constituting identities that refuse stability, that remain fluid, that resist definition."
Document 15: Another Suitcase in Another Hall: ``Another Suitcase in Another Hall ''is a song recorded by Scottish singer Barbara Dickson, for the 1976 concept album, Evita, the basis of the musical of the same name. The musical was based on the life of Argentinian leader Eva Perón. Written by Tim Rice and Andrew Lloyd Webber, the song is presented during a sequence where Eva throws out her husband's mistress on the streets. The latter sings the track, wondering about her future and coming to the conclusion that she would be fine. Dickson was enlisted by the songwriters to record the track after hearing her previous work.
ground_truth: May 1997
sub_queries: who played eva peron in the movie evita Answer: Madonna
When did Madonna 's relationship with Carlos Leon ended? Answer: May 1997