CREATE TABLE "wisconsin" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "results" text,
  "candidates" text
);

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

Question: Who's the incumbent in the district that first elected in 1969?
SQL: SELECT "incumbent" FROM "wisconsin" WHERE "first_elected"=1969;

Question: Who's the incumbent of district Wisconsin 5?
SQL: SELECT "incumbent" FROM "wisconsin" WHERE "district"='Wisconsin 5';