CREATE TABLE "tallest_buildings" (
  "rank" real,
  "name" text,
  "street_address" text,
  "height_feet_m" text,
  "floors" real,
  "year" real
);

Question: In 1950 what is the average rank?
SQL: SELECT AVG("rank") FROM "tallest_buildings" WHERE "year"=1950;

Question: What is the building's name that is 617 / 188 in height and ranked less than 6?
SQL: SELECT "name" FROM "tallest_buildings" WHERE "rank"<6 AND "height_feet_m"='617 / 188';