 how many city with name being providence tower
CREATE TABLE "tallest_under_construction_buildings" (
  "rank" real,
  "name" text,
  "city" text,
  "region" text,
  "height_m" real,
  "height_ft" real,
  "floors" real,
  "estimated_completion" real
);
SELECT COUNT("city") FROM "tallest_under_construction_buildings" WHERE "name"='Providence Tower';