What Field was Commissioned in 1958, 2005?
CREATE TABLE "list_of_geothermal_power_stations" (
  "name" text,
  "location" text,
  "field" text,
  "capacity_mw" real,
  "annual_generation_average_g_wh" text,
  "commissioned" text
);
SELECT "field" FROM "list_of_geothermal_power_stations" WHERE "commissioned"='1958, 2005';