What's the CO2 g/km of a Fiat running on diesel with the L/100km urban more than 6.3 and an mpg-UK combined of 43.5?
CREATE TABLE "see_also" (
  "manufacturer" text,
  "transmission" text,
  "engine_capacity" real,
  "fuel_type" text,
  "l_100km_urban_cold" real,
  "l_100km_extra_urban" real,
  "l_100km_combined" real,
  "mpg_uk_urban_cold" real,
  "mpg_uk_extra_urban" real,
  "mpg_uk_combined" real,
  "mpg_us_urban" real,
  "mpg_us_extra_urban" real,
  "mpg_us_combined" real,
  "co_2_g_km" real,
  "green_rating" text
);
SELECT COUNT("co_2_g_km") FROM "see_also" WHERE "fuel_type"='diesel' AND "manufacturer"='fiat' AND "l_100km_urban_cold">6.3 AND "mpg_uk_combined"=43.5;