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

Question: Who was the incumbent in the district that first elected someone in 1807?
SQL: SELECT "incumbent" FROM "united_states_house_of_representatives_e" WHERE "first_elected"='1807';

Question: When was someone first elected in the district with incumbent john smith?
SQL: SELECT "first_elected" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='John Smith';

Question: What party represents the district with incumbent matthew clay?
SQL: SELECT "party" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='Matthew Clay';

Question: What party represents the district with john g. jackson?
SQL: SELECT "party" FROM "united_states_house_of_representatives_e" WHERE "incumbent"='John G. Jackson';