Complex sentence: It was founded in Greenwich Village in 1971 by Steina and Woody Vasulka, taking its name from the original location, the kitchen of the Mercer Arts Center, where artists working mostly in video showed their work.
Split into simpler sentences: It was founded in Greenwich Village in 1971 by Steina and Woody Vasulka. It takes it name from the original location, the kitchen of the Mercer Arts Center, where artists working mostly in video media would convene to show their work.