CREATE TABLE "1995_enlargement" (
  "member_countries" text,
  "population" real,
  "area_km" real,
  "gdp_billion_us" text,
  "gdp_per_capita_us" real
);

Question: What is the gdp of the country with an area of 83871 (km2)?
SQL: SELECT "gdp_billion_us" FROM "1995_enlargement" WHERE "area_km"=83871;

Question: What was the gdp of the country with a gdp per capita of $18048?
SQL: SELECT "gdp_billion_us" FROM "1995_enlargement" WHERE "gdp_per_capita_us"=18048;

Question: What is Austria's maximum area (km2)?
SQL: SELECT MAX("area_km") FROM "1995_enlargement" WHERE "member_countries"='Austria';