Question: Which philanthropic cause did this American businessman, author, politician, and philanthropist who started the program "Opportunity NYC" join?
Sentence (from "Julius Rosenwald"): He is best known as a part-owner and leader of Sears, Roebuck and Company, and for establishing the Rosenwald Fund, which donated millions in matching funds to support the education of African American children in the rural South, as well as other philanthropic causes in the first half of the 20th century.
Relevant evidence: No