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

Question: During what years did the tallest building, located at 211 Union Street, have less than 31 floors?
SQL: SELECT "years_as_tallest" FROM "timeline_of_tallest_buildings" WHERE "floors"<31 AND "street_address"='211 union street';

Question: What is the average number of floors at 170 Fourth Avenue North?
SQL: SELECT AVG("floors") FROM "timeline_of_tallest_buildings" WHERE "street_address"='170 fourth avenue north';

Question: What is the address of the Life & Casualty Tower?
SQL: SELECT "street_address" FROM "timeline_of_tallest_buildings" WHERE "name"='life & casualty tower';