Question: Mound of Butter is a painting by the 19th-century by which French realist painter, made between 1875 and 1885, the painting is hosted at The National Gallery of Art, and its attached Sculpture Garden, is a national art museum in Washington, D.C., located on the National Mall, between 3rd and 9th Streets, at Constitution Avenue NW?
Sentence (from "National Gallery of Art"): Open to the public and free of charge, the museum was privately established in 1937 for the American people by a joint resolution of the United States Congress.
Relevant evidence: No