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

Question: Who's the incumbent of the Louisiana 1 district?
SQL: SELECT "incumbent" FROM "united_states_house_of_representatives_e" WHERE "district"='Louisiana 1';

Question: Who were the candidates in the Louisiana 4 district?
SQL: SELECT "candidates" FROM "united_states_house_of_representatives_e" WHERE "district"='Louisiana 4';

Question: Who's the incumbent in the district first elected in 1976?
SQL: SELECT "incumbent" FROM "united_states_house_of_representatives_e" WHERE "first_elected"=1976;