What is the City or Town of the monument with a Longitude of 89°11′w?
CREATE TABLE "references" (
  "county" text,
  "monument_name" text,
  "year_built" real,
  "city_or_town" text,
  "latitude" text,
  "longitude" text
);
SELECT "city_or_town" FROM "references" WHERE "longitude"='89°11′w';