Question: Who is  Georgia O'Keeffe?
Sentence (from "Red and Orange Streak"): In a letter to a friend, O'Keeffe wrote: "the whole thing—lit up—first in one place—then in another with flashes of lightning—sometimes just sheet lightning—and sometimes sheet lightning with a sharp bright zigzag flashing across—I … sat on the fence for a long time—just looking at the lightning."
Relevant evidence: No