What is the Height (m/ft) for bucharest Built in 2009, and a Rank of 13?
CREATE TABLE "completed_buildings" (
  "rank" real,
  "building" text,
  "city" text,
  "height_m_ft" text,
  "built" real
);
SELECT "height_m_ft" FROM "completed_buildings" WHERE "city"='bucharest' AND "built"=2009 AND "rank"=13;