Question: what is the water park with the rank 20?
SQL: SELECT "Water park" FROM "2-16578883-7" WHERE "Rank" = 20.0;

Question: what is 2011 when the rank is less than 8 and the water park is Ocean World?
SQL: SELECT SUM("2011") FROM "2-16578883-7" WHERE "Rank" < 8.0 AND "Water park" = 'Ocean World';

Question: what is the lowest 2011 for sunway lagoon water park and 2012 is less than 1200000?
SQL: SELECT MIN("2011") FROM "2-16578883-7" WHERE "Water park" = 'sunway lagoon' AND "2012" < 1200000.0;