Question: What is the nation when gold is 0, bronze is more than 0 and rank is 16?
SQL: SELECT "Nation" FROM "2-18403356-1" WHERE "Gold" = 0.0 AND "Bronze" > 0.0 AND "Rank" = '16';

Question: what is the silver when the nation is syria (syr) and gold is more than 0?
SQL: SELECT SUM("Silver") FROM "2-18403356-1" WHERE "Nation" = 'syria (syr)' AND "Gold" > 0.0;

Question: what is the average gold when rank is total and silver is more than 20?
SQL: SELECT AVG("Gold") FROM "2-18403356-1" WHERE "Rank" = 'total' AND "Silver" > 20.0;

Question: what is the most silver when bronze is more than 0, total is more than 1, gold is more than 0 and the nation is China (CHN)?
SQL: SELECT MAX("Silver") FROM "2-18403356-1" WHERE "Bronze" > 0.0 AND "Total" > 1.0 AND "Gold" > 0.0 AND "Nation" = 'China (CHN)';