Question: Which dance form of Alex Magno originated in the mid-1970s in NY?

full_context: Document 1: Ballet Manila: Ballet Manila is a classical ballet institution and dance company in the Philippines. It currently highlights more than fifty highly trained dancers in the highly rigorous Russian (Vaganova) method of classical ballet. Locally the company has performed in 47 cities holding more than 4,100 performances. The company has done tours in Asia, Europe and North America, where it has held more than 140 performances. The company is most notable for its in-house creative director, principal dancer and prima ballerina Lisa Macuja-Elizalde. Along with Ballet Philippines and the Philippine Ballet Theatre, Ballet Manila is one of the three major ballet companies in the Philippines. It regularly holds its performances at the Aliw theater and Star Theater, which are both located within Star City at Pasay City. The concept of a ballet company by the dancers, of the dancers and for the dancers was the idea of Lisa Macuja-Elizalde when she, along with ballet master Osias Barroso and ten other dancers established Ballet Manila in 1995.
Document 2: Mamela Nyamza: Mamela Nyamza is a dancer, teacher, choreographer, and activist in South Africa. She is trained in a variety of styles of dance including ballet, modern dance, African dance, the Horton technique, Spanish dance, jazz, movement and mime, flying low technique, release technique, gumboot dance and Butoh. Nyamza is known for blending styles in a way that challenges traditional standards. Nyamza has performed nationally and internationally and has choreographed autobiographical, political, and social pieces both on her own and in collaboration with other artists. She draws inspiration from her daily life and her identity as a young, black woman. Nyamza's abstract dance style allows her to use dance as a way to share both her own personal stories as well as African stories with the world. Additionally, she has created various community outreach projects that have helped to spread the positive influence of dance to different communities within South Africa, including the University of Stellenbosch's Project Move 1524, a group that works to educate on issues relating to HIV/AIDS, domestic violence and drug abuse, through dance movement therapy.
Document 3: Samba (ballroom dance): The international Ballroom version of samba is a lively, rhythmical dance with elements from Brazilian samba. It has recently been exposed to the American public in television programmes such as Strictly Come Dancing and Dancing with the Stars. It differs considerably from the original samba styles of Brazil, in particular it differs from Ballroom Samba in Brazil itself. In many other ways it though been influenced by the Brazilian version of samba, in particular maxixe, and subsequently developed independently from samba in Brazil.
Document 4: La tecnica cubana: "La técnica cubana", often abbreviated as "técnica", is a form of Cuban contemporary dance that was founded by Ramiro Guerra Suarez in Cuba in 1959. Unlike other forms of traditional Cuban dance, "técnica" fuses many different dance forms together, such as those from Africa, Europe, and North America. It is a highly expressive and robust dance form, incorporating many quick jumps and undulating movements of the torso and pelvis. "Técnica" blends a high amount of movement and expression with a degree of synchronization, producing an athletic, theatrical dance form.
Document 5: Salsa dura: Salsa dura, also known as salsa brava or salsa gorda, is a style of salsa music developed in the 1970s with an emphasis on the instrumental part of the music (piano, bass, horns, percussion, etc.) over the lead vocals. The genre originated in New York City where large ensembles such as Fania All-Stars adapted the salsa genre to a descarga format. Modern salsa dura bands include Orquesta SCC, Spanish Harlem Orchestra, Wayne Gorbea, Jimmy Bosch, Orquesta La Puntualidad and Orquesta La 33. The term is often used in contrast to salsa romántica, the Latin pop-oriented subgenre of salsa that has predominated since the late 1980s.
Document 6: Street dance: A street dance is a dance style—regardless of country of origin—that evolved outside dance studios in any available open space such as streets, dance parties, block parties, parks, school yards, raves, and nightclubs. The term is used to describe vernacular dances in urban context. Vernacular dances are often improvisational and social in nature, encouraging interaction and contact with spectators and other dancers. These dances are a part of the vernacular culture of the geographical area that they come from. Examples of street dance include b-boying (or breakdancing), which originated in New York City.
Document 7: Ronald K. Brown: Dancer and choreographer Ronald K. Brown founded the dance company Evidence in New York in 1985. Brown's work incorporates modern dance, Senegalese Sabar and other West African movement vocabularies, Afro-Caribbean dance, and contemporary urban dance from around the world. He has choreographed numerous works for his own company, as well as for Philadanco, Alvin Ailey American Dance Theater, the Jacob's Pillow Dance Festival, the Maimouna Keita West African Dance Company, and many others. Brown has received numerous awards, including a Guggenheim Fellowship, a Bessie Award, a Black Theater Alliance Award, and an Audelco Award for the choreography of Regina Taylor's musical Crowns. He has also been a guest artist at The Sharon Disney Lund School of Dance at CalArts. He studied dance with Mary Anthony.
Document 8: Alex Magno (political scientist): Alexander R. Magno, popularly known as Professor Alex Magno, is a political scientist and academician in the Philippines.
Document 9: Dance in Cuba: Cuban culture encompasses a wide range of dance forms. The island's indigenous people performed rituals known as areíto, which included dancing, although little information is known about such ceremonies. After the colonization of Cuba by the Spanish Kingdom, European dance forms were introduced such as the French contredanse, which gave rise to the Cuban contradanza. Contradanza itself spawned a series of ballroom dances between the 19th and 20th centuries, including the danzón, mambo and cha-cha-cha. Rural dances of European origin, such as the zapateo and styles associated with punto guajiro also became established by the 19th century, and in the 20th century son became very popular. In addition, numerous dance traditions were brought by black slaves from West Africa and the Congo basin, giving rise to religious dances such as Santería, yuka and abakuá, as well as secular forms such as rumba. Many of these dance elements from European dance and religious dances were fused together to form the basis of la técnica cubana. Cuban music also contributed to the emergence of Latin dance styles in the United States, namely rhumba (ballroom rumba) and salsa.
Document 10: Suscia: Suscia (or Sussa, Suça, Súcia, Sussia) is a folk dance from the state of Tocantins in Brazil. It is most predominant in cities like Peixe, Natividade and Arrais. The exact name of the dance is unknown, as every community has a slight variation of the word. There is also controversy around when and where the dance originated from. Some locals say that the Suscia was created by African slaves brought to the area by gold miners. After the workday was over, the slave owners would allow their subjects to dance. Others believe that the dance originated in the Quilombo itself. Quilombos were small villages inhabited by escaped slaves, a symbol of slave rebellion. Whatever is the origin of this dance, it has deep African slave roots and it is part of Brazilian history.
Document 11: Samba: Samba (] ) is a Brazilian musical genre and dance style, with its roots in Africa via the West African slave trade and African religious traditions, particularly of Angola and the Congo, through the samba de roda genre of the northeastern Brazilian state of Bahia, from which it derived. Although there were various forms of samba in Brazil with popular rhythms originated from drumming, samba as a music genre is seen as a musical expression of urban Brazil.
Document 12: Alex Magno (choreographer): Alexandre (Alex-Andre) Magno is a Brazilian born choreographer and director. His dance styles include hip-hop, jazz, ballet, samba, flamenco, tango, salsa, and martial arts. He has performed with Madonna, Yanni, Britney Spears, the Lido La Tourné, Ballet Hispanico, the Ringling Brothers Circus, and the Academy Awards. He also works with his own dance company, “Personna Dance Theatre".
Document 13: Bruno Tonioli: Bruno Tonioli (] ; born 25 November 1955) is an Italian choreographer, dancer, and TV personality.
Document 14: Alex Magala: Alexandr Magala (born 24 June 1989 in Orhei) is a Moldovan entertainer and sword swallower who won "Russia's Got Talent" in 2014. He was also a finalist on "Britain's Got Talent" and "Italia's Got Talent", a semi-finalist on "Ukraine's Got Talent", and a quarter-finalist on "America's Got Talent."
Document 15: Salsa (dance): Salsa is a popular form of social dance that originated in the Caribbean. The movements of salsa have origins in Cuban Son, cha-cha-cha, mambo and Puerto Rican bomba and plena and other dance forms. The dance, along with the salsa music, originated in the mid-1970s in New York.
ground_truth: Salsa