Question: This  social justice leadership training school and cultural center was founded in 1932 by an American educator and socialist  famous for its role in what?
Sentence (from "Centro Cultural Gabriela Mistral"): The complex was originally built to serve as the headquarters for the third UNCTAD conference, which was held in Santiago in 1972, and consisted of a convention center and an adjoining 22-stories building.
Relevant evidence: No