What party does William J. Jefferson?
CREATE TABLE table_1341453_20 (party VARCHAR, incumbent VARCHAR)
SELECT party FROM table_1341453_20 WHERE incumbent = "William J. Jefferson"
### Context: CREATE TABLE table_1341453_20 (party VARCHAR, incumbent VARCHAR) ### Question: What party does William J. Jefferson? ### Answer: SELECT party FROM table_1341453_20 WHERE incumbent = "William J. Jefferson"