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

Question: What year was first elected william m. wheeler (d) unopposed?
SQL: SELECT "first_elected" FROM "united_states_house_of_representatives_e" WHERE "candidates"='William M. Wheeler (D) Unopposed';

Question: What district does  incumbent  james c. davis represent?
SQL: SELECT "district" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='James C. Davis';