Question: What nationality is Robert Ellsberg's father?
Sentence (from "Daniel Ellsberg"): Daniel Ellsberg (born April 7, 1931) is an American economist, activist and former United States military analyst who, while employed by the RAND Corporation, precipitated a national political controversy in 1971 when he released the "Pentagon Papers", a top-secret Pentagon study of the U.S. government decision-making in relation to the Vietnam War, to "The New York Times" and other newspapers.
Relevant evidence: Yes