Conversation so far:
What is Georgia O'Keeffe known for?
Georgia O'Keeffe was best known for her paintings of enlarged flowers, New York skyscrapers, and New Mexico landscapes. O'Keeffe has been recognized as the Mother of American modernism“
What were some of Georgia O'Keeffe's notable works?
One of Georgia O'Keeffe's most notable works is the Radiator Building—Night, New York. Other examples are New York Street with Moon, The Shelton with Sunspots, N.Y., and City Night .

Question: What is she known for?
Self-contained rewrite: What is Georgia O'Keeffe known for?