Question: What is the total time for One South Broad?
SQL: SELECT SUM("Year") FROM "2-12587248-1" WHERE "Name" = 'One South Broad';

Question: What is the 123 South Broad Street address name before 1973?
SQL: SELECT "Name" FROM "2-12587248-1" WHERE "Year" < 1973.0 AND "Address" = '123 South Broad Street';