Question: Clark Clifford was an American lawyer who served as political adviser to which president known for launching the Marshall Plan?
Sentence (from "Clark Clifford"): Clark McAdams Clifford (December 25, 1906October 10, 1998) was an American lawyer who served as an important political adviser to Democratic Presidents Harry S. Truman, John F. Kennedy, Lyndon B. Johnson and Jimmy Carter.
Relevant evidence: Yes