CREATE TABLE "south_australia" (
  "team" text,
  "coach" text,
  "home_ground" text,
  "location" text,
  "founded" real
);

Question: What is the average year that the club located in enfield was founded with an unknown coach?
SQL: SELECT AVG("founded") FROM "south_australia" WHERE "coach"='unknown' AND "location"='enfield';

Question: What was the location of the club where the home ground is wilfred taylor reserve?
SQL: SELECT "location" FROM "south_australia" WHERE "home_ground"='wilfred taylor reserve';

Question: Where is the club that was founded in 1946 located that has an unknown coach?
SQL: SELECT "location" FROM "south_australia" WHERE "coach"='unknown' AND "founded"=1946;

Question: Where is the home ground for the club coached by nick pantsaras and founded before 1946?
SQL: SELECT "home_ground" FROM "south_australia" WHERE "founded"<1946 AND "coach"='nick pantsaras';