Question: What's the to Iran with fewer than 9 survivors, more than 3 damaged, and an ussr an-26 aircraft?
SQL: SELECT AVG("to Iran") FROM "2-1817852-1" WHERE "survived" < 9.0 AND "Aircraft" = 'ussr an-26' AND "damaged" > 3.0;

Question: What's the average destroyed with a 1990 over 12, more than 1 damaged, 6 survivors, and a to Iran less than 4?
SQL: SELECT AVG("destroyed") FROM "2-1817852-1" WHERE "1990" > 12.0 AND "damaged" > 1.0 AND "to Iran" < 4.0 AND "survived" = 6.0;

Question: What's the average survived with a to Iran less than 1, more than 1 destroyed, and a brazil tucano aircraft?
SQL: SELECT AVG("survived") FROM "2-1817852-1" WHERE "to Iran" < 1.0 AND "Aircraft" = 'brazil tucano' AND "destroyed" > 1.0;