Question: When was American modern dancer and choreographer who danced Danza born 

full_context: Document 1: La Danse (film): La Danse: The Paris Opera Ballet (French: La danse - Le ballet de l'Opéra de Paris ) is a 2009 French documentary film directed by Frederick Wiseman. Besides aiming to reveal "how the company functions as an organic whole", the film follows the production of seven ballets by the Paris Opera Ballet. The ballets featured are:
Document 2: Danza (ballet): Danza was a modern dance solo choreographed and danced by Martha Graham to music by Darius Milhaud. It premiered on March 3, 1929, at the Booth Theatre in New York City.
Document 3: Martha Graham: Martha Graham (May 11, 1894 – April 1, 1991) was an American modern dancer and choreographer. Her style, the Graham technique, reshaped American dance and is still taught worldwide.
Document 4: Ruth St. Denis: Ruth St. Denis (January 20, 1879 – July 21, 1968) was an American modern dance pioneer, introducing eastern ideas into the art. She was the co-founder of the American Denishawn School of Dance and the teacher of several notable performers.
Document 5: Vision of the Apocalypse: Vision of the Apocalypse was a modern dance created by Martha Graham to music by Hermann Reutter. It premiered on April 14, 1929, at the Booth Theatre in New York City. The occasion marked the debut of Martha Graham and Group, Graham's new concert ensemble and the predecessor to the Martha Graham Dance Company. "Vision of the Apocalypse" was the first piece Graham choreographed for a large group.
Document 6: Daniel Nagrin: Daniel Nagrin (May 22, 1917 – December 29, 2008) was an American modern dancer, choreographer, teacher, and author. He was born in New York City.
Document 7: Agrippina Vaganova: Agrippina Yakovlevna Vaganova (Russian: Агриппина Яковлевна Ваганова ; 26 June 1879 – 5 November 1951) was a Russian ballet teacher who developed the Vaganova method – the technique which derived from the teaching methods of the old "Imperial Ballet School" (today the "Vaganova Academy of Russian Ballet") under the "Premier Maître de Ballet" Marius Petipa throughout the mid to late 19th century, though mostly throughout the 1880s and 1890s. It was Vaganova who perfected and cultivated this form of teaching the art of classical ballet into a workable syllabus. Her "Fundamentals of the Classical Dance" (1934) remains a standard textbook for the instruction of ballet technique. Her technique is one of the most popular techniques today.
Document 8: Twyla Tharp: Twyla Tharp ( ; born July 1, 1941) is an American dancer, choreographer, and author who lives and works in New York City. In 1966, she formed her own company Twyla Tharp Dance. Her work often uses classical music, jazz, and contemporary pop music.
Document 9: Figure of a Saint: Figure of a Saint was a modern dance solo choreographed by Martha Graham to the music of George Frideric Handel. The work premiered on January 24, 1929 at The Bennett School in Millbrook, New York. The all solo program also included: "Valse Noble", "Maid with the Flaxen Hair", "Fragilite", "In a Boat", "Insincerities" ("Petulance", "Remorse", "Politeness", "Vivacity"), "Tanagra (Gnossienne 1 and 2)", "Scherzo Waltz", "Deux Valses Sentimentales", "Prelude" and "La Cancion". Louis Horst accompanied Graham on piano.
Document 10: Graham technique: Graham technique is a modern dance movement style and pedagogy created by American dancer and choreographer Martha Graham (1894–1991). Graham technique has been called the "cornerstone" of American modern dance, and has been taught worldwide. It is widely regarded as the first codified modern dance technique, and strongly influenced the later techniques of Merce Cunningham, Lester Horton, and Paul Taylor.
Document 11: Balanchine technique: Balanchine technique is the ballet performance style invented by dancer, choreographer, and teacher George Balanchine (1904-1983), and a trademark of the George Balanchine Foundation. It is used widely used today in many of Balanchine's choreographic works. It is employed by ballet companies and taught in schools throughout North America, including the New York City Ballet and School of American Ballet, where it first emerged.
Document 12: Ron Protas: Ron Protas is the former Associate Director of the Martha Graham Center of Contemporary Dance and heir of modern dance choreographer Martha Graham.
Document 13: Sarabande and Danse (d'Amboise): Sarabande and Danse is a ballet made by Jacques d'Amboise to Debussy's "Sarabande" (1901) and "Danse" (1890). The premiere took place May 29, 1975, as part of New York City Ballet's Ravel Festival at the Lincoln Center.
Document 14: Graham technique: Graham technique is a modern dance movement style and pedagogy created by American dancer and choreographer Martha Graham (1894–1991). Graham technique has been called the "cornerstone" of American modern dance, and has been taught worldwide. It is widely regarded as the first codified modern dance technique, and strongly influenced the later techniques of Merce Cunningham, Lester Horton, and Paul Taylor.
Document 15: Maggie Black: Margaret "Maggie" Black (March 31, 1930 – May 11, 2015) was a ballet teacher who taught in New York City during the 1970s and 1980s. She coached dancers such as Martine Van Hamel, Kevin McKenzie, Natalia Makarova and Gelsey Kirkland. She developed a ballet technique based on anatomy. She stressed moving from a neutral spinal and pelvic alignment with weight evenly distributed throughout each foot. She amassed a large following of both ballet and modern dancers. Eventually she split her class into two, one for modern dancers and one for ballet dancers. Choreographers such as William Forsythe and Ohad Naharin attended her class.
ground_truth: May 11, 1894