CREATE TABLE "electorate_results_for_the_new_zealand_g" (
  "electorate" text,
  "incumbent" text,
  "winner" text,
  "majority" real,
  "runner_up" text
);

Question: Who was the incumbent when Arthur Osborne won the election?
SQL: SELECT "incumbent" FROM "electorate_results_for_the_new_zealand_g" WHERE "winner"='arthur osborne';