CREATE TABLE "timeline_of_tallest_buildings" (
  "name" text,
  "street_address" text,
  "years_as_tallest" text,
  "height_feet_m" text,
  "floors" real
);

Question: What's the least amount of floors at 921 sw sixth avenue?
SQL: SELECT MIN("floors") FROM "timeline_of_tallest_buildings" WHERE "street_address"='921 sw sixth avenue';

Question: What's the address of the union bank of California tower?
SQL: SELECT "street_address" FROM "timeline_of_tallest_buildings" WHERE "name"='union bank of california tower';

Question: What were the years that the building at 200 sw harrison was considered to be the tallest building?
SQL: SELECT "years_as_tallest" FROM "timeline_of_tallest_buildings" WHERE "street_address"='200 sw harrison';