Question: What year was the building completed that has 10 floors?
SQL: SELECT AVG("Year completed") FROM "2-15189770-2" WHERE "Floors" = 10.0;

Question: What was the name of the building with 10 floors?
SQL: SELECT "Name" FROM "2-15189770-2" WHERE "Floors" = 10.0;

Question: How tall is the Florida Life Building, completed before 1990?
SQL: SELECT "Height ft / m" FROM "2-15189770-2" WHERE "Year completed" < 1990.0 AND "Name" = 'Florida Life Building';