Question: Which filmmaker was also a dancer, Yvonne Rainer or Tom Buckingham?
Context: Simone Forti (born 1935), is an American Italian Postmodern artist, dancer, choreographer, and writer.  Since the 1950's, Forti has exhibited, performed, and taught workshops all over the world, including performances at the Louvre in Paris, the Museum of Modern Art in New York, and the J. Paul Getty Museum in Los Angeles.  Her innovations in Postmodern dance, including her seminal 1961 body of work, "Dance Constructions", along with her contribution to the early Fluxus movement, have influenced many notable artists, including dancer/artist Yvonne Rainer and the Judson Dance Theater in New York.  Forti first apprenticed with Anna Halprin in the 1950s and has since worked alongside artists and composers Nam June Paik, Steve Paxton, La Monte Young, Trisha Brown, Charlemagne Palestine, Peter Van Riper, Dan Graham, Yoshi Wada, and Robert Morris, among many others.  Forti's published books include "Handbook in Motion" (1974, The Press of the Nova Scotia College of Art and Design), "Angel" (1978, self-published), and "Oh Tongue" (2003, Beyond Baroque Foundation, ed.  Fred Dewey).  She is currently represented by The Box L.A. in Los Angeles, CA, and has works in the permanent collections of the Museum of Modern Art (MOMA) in New York, the Stedelijk Museum in Amsterdam, the Generali Foundation in Vienna, the Whitney Museum of American Art in New York, and the Moderna Museet in Stockholm. The Grand Union was an improvisational dance group based in New York City from 1970 to 1976.  It grew out of Yvonne Rainer dance company, and her piece "Continuous Project - Altered Daily".  Rainer's sole authority as choreographer began to slip in early 1970 when the dancers, at her invitation, began to bring in their own materials for the piece.  By late 1970, new members had joined the group and the materials were improvised to a much greater extent.  The company, which was still often billed as "Yvonne Rainer and Dancers" in the beginning, chose "The Grand Union" as a name to avoid any obvious associations with dance in order to inoculate themselves against charges that what they were doing was not properly "dance".  To avoid problems with the supermarket chain of the same name, the group used the legal name "Rio Grand Union". Tom Buckingham (February 25, 1895 – September 7, 1934) was an American film director and screenwriter.  He directed 48 films between 1920 and 1932.  He was born in Chicago, Illinois, and died from surgical complications. The Collective for Living Cinema was an outpost of avant-garde cinema located on White Street in Lower Manhattan in the United States of America.  It regularly presented work by filmmakers such as Ken Jacobs, Johan van der Keuken, Yvonne Rainer, Christine Vachon, Dziga Vertov and many others who created films that were outside of the commercial mainstream in the United States.  It also published a number of scholarly journals on film.  Many of the founders studied film at Binghamton University together, where they developed a particular interest in the avant-garde. Steve Paxton (born 1939 in Phoenix, Arizona) is an experimental dancer and choreographer.  His early background was in gymnastics while his later training included three years with Merce Cunningham and a year with José Limón.  As a founding member of the Judson Dance Theater, he performed works by Yvonne Rainer and Trisha Brown.  He was a founding member of the experimental group Grand Union and in 1972 named and began to develop the dance form known as Contact Improvisation, a form of dance that utilizes the physical laws of friction, momentum, gravity, and inertia to explore the relationship between dancers. Raven Row is a free art exhibition centre in Spitalfields.  It was constructed from numbers 56 and 58, Artillery Lane.  These properties were built about 1690.  The area was formerly used for testing artillery and this portion of the lane was known as Raven Row until 1895.  The buildings have previously been used as shops of Huguenot silk weavers and traders.  They were converted into a gallery in 2009 by Alex Sainsbury who established a charity to run it.  The inaugural exhibition was of work by New York artist Ray Johnson.  Raven Row has held exhibitions by K.P. Brehmer, Iain Baxter, Adam Chodzko, Suzanne Treister, Peter Kennard, Hilary Lloyd, Harun Farocki, Eduardo Paolozzi, Stephen Willats and Yvonne Rainer.  Other exhibitions have been curated by Richard Grayson, Lars Bang Larsen and Alice Motard. Sigrid Pawelke is a curator and a performance and art historian, regarded as one of the leading experts of the Bauhaus Stage and its influences on the arts in North America.  In 2015 she was part of the Black Mountain show at the Hamburger Bahnhof, Museum of Contemporary Art Berlin, contributing fifteen film interviews of former Black Mountain students (such as Ati Gropius, choreographer Anna Halprin and Yvonne Rainer). Yvonne Rainer (born November 24, 1934) is an American dancer, choreographer, and filmmaker, whose work in these disciplines is regarded as challenging and experimental.  Her work is sometimes classified as minimalist art.  Rainer currently lives and works in California and New York. Performa is a non-profit arts organization well known for the Performa Biennial, a festival of performance art that happens in various venues and institutions in New York city every other year.  Performa was founded by RoseLee Goldberg, historian and curator of contemporary performance art.  The organization also commissions new works, tours performances premiered at the biennial, and manages the work of choreographer and filmmaker, Yvonne Rainer. G. Roger Denson (born 1956) is an American journalist, cultural and art critic, theoretician, novelist and curator.  A regular contributor to "The Huffington Post", his writings have also appeared in such international publications as "Art in America", "Parkett", "Artscribe International", "Flash Art", "Cultural Politics", "Bijutsu Techo", "Kunstlerhaus Bethanien", "Artbyte", "Art Experience", "Arts Magazine", "Contemporanea", "Tema Celeste", "M/E/A/N/I/N/G", "Trans>Arts, Culture,Media", and "Journal of Contemporary Art".  He has published criticism and commentary on such international artists as Terrence Malick, Kathryn Bigelow, Hiroshi Sugimoto, Sigmar Polke, Andres Serrano, Yvonne Rainer, Carrie Mae Weems, Catherine Opie, Sarah Charlesworth, Cindy Sherman, Jack Smith, Philip Taaffe, Pat Steir, Shirin Neshat, Marilyn Minter, Renée Green, John Miller, Lorna Simpson, Robert Longo, Ashley Bickerton, Hunter Reynolds, Kathe Burkhart, Tishan Hsu, Liz Larner, Gilbert and George, Barbara Ess, Robert Ryman, Dan Flavin, General Idea, Lydia Dona, Maura Sheehan, Jimmy De Sana, Dan Graham and Richard Artschwager, Wael Shawky, Shazia Sikander, Jim Shaw (artist), Louise Bourgeois, Robert Gober, Vasudeo S. Gaitonde, Gego, Nasreen Mohamedi, Kurt Hentschläger,
Answer: Yvonne Rainer