What is the date opened if thedistrict ID is 11901?
CREATE TABLE "a" (
  "district_name" text,
  "dist_id" real,
  "isd" text,
  "county" text,
  "authorizing_agency" text,
  "date_opened" text,
  "services" text
);
SELECT "date_opened" FROM "a" WHERE "dist_id"=11901;