Table: euro_tkd_2008
Columns: rank
nation
gold
silver
bronze
total

Question: what is the average bronze when gold is more than 0, the nation is greece and silver is less than 0?
SQL: SELECT AVG("bronze") FROM euro_tkd_2008 WHERE "gold" > 0 AND "nation" = 'greece' AND "silver" < 0

Question: what is the rank when bronze is less than 1 and silver is less than 1?
SQL: SELECT "rank" FROM euro_tkd_2008 WHERE "bronze" < 1 AND "silver" < 1