Question: During what years did the tallest building, located at 211 Union Street, have less than 31 floors?
SQL: SELECT "Years as tallest" FROM "2-12169960-3" WHERE "Floors" < 31.0 AND "Street Address" = '211 Union Street';

Question: What is the average number of floors at 170 Fourth Avenue North?
SQL: SELECT AVG("Floors") FROM "2-12169960-3" WHERE "Street Address" = '170 Fourth Avenue North';

Question: What is the address of the Life & Casualty Tower?
SQL: SELECT "Street Address" FROM "2-12169960-3" WHERE "Name" = 'Life & Casualty Tower';