Question: Which Floors have a Pinnacle height ft (m) of 1,136 (346), and a Pinn Rank larger than 4?
SQL: SELECT AVG("Floors") FROM "2-1888019-2" WHERE "Pinnacle height ft (m)" = '1,136 (346)' AND "Pinn. Rank" > 4.0;

Question: How much Standard Rank has a Name of 311 south wacker drive, and a Year larger than 1990?
SQL: SELECT SUM("Std. Rank") FROM "2-1888019-2" WHERE "Name" = '311 south wacker drive' AND "Year" > 1990.0;

Question: Which Floors have a Pinnacle height ft (m) of 995 (303), and an Std Rank larger than 6?
SQL: SELECT MAX("Floors") FROM "2-1888019-2" WHERE "Pinnacle height ft (m)" = '995 (303)' AND "Std. Rank" > 6.0;