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

Question: What district did Joe Waggonner belong to?
SQL: SELECT "district" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='Joe Waggonner';

Question: What is the name of the incumbent who was first eleccted in 1940?
SQL: SELECT "incumbent" FROM "united_states_house_of_representatives_e" WHERE "first_elected"=1940;