Question: The Guggenheim Museum SoHo was a branch of a museum that was established in what year?
Sentence (from "Solomon R. Guggenheim Museum"): The Solomon R. Guggenheim Museum, often referred to as The Guggenheim, is an art museum located at 1071 Fifth Avenue on the corner of East 89th Street in the Upper East Side neighborhood of Manhattan, New York City.
Relevant evidence: Yes