CREATE TABLE "year_by_year" (
  "year" text,
  "division" text,
  "league" text,
  "reg_season" text,
  "playoffs" text,
  "open_cup" text
);

Question: What year had a 1st round playoff in the NASL indoor league?
SQL: SELECT "year" FROM "year_by_year" WHERE "playoffs"='1st round' AND "league"='nasl indoor';