what's the height (ft) with name being 52-54 lime street
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 "height_ft" FROM "tallest_under_construction_buildings" WHERE "name"='52-54 Lime Street';