What First runner-up has a Miss Maja Pilipinas of nanette prodigalidad?
CREATE TABLE "title_holders_from_1973_until_1991" (
  "year" real,
  "binibining_pilipinas_universe" text,
  "binibining_pilipinas_international" text,
  "miss_maja_pilipinas" text,
  "binibining_pilipinas_tourism" text,
  "first_runner_up" text,
  "second_runner_up" text
);
SELECT "first_runner_up" FROM "title_holders_from_1973_until_1991" WHERE "miss_maja_pilipinas"='nanette prodigalidad';