CREATE TABLE "united_states_house_of_representatives_e" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" text,
  "result" text,
  "candidates" text
);

Question: Which district did William A. Burwell (Dr) belong to? 
SQL: SELECT "district" FROM "united_states_house_of_representatives_e" WHERE "candidates"='William A. Burwell (DR)';