What's the engine capacity when the mpg-UK urban is less than 12.2, the mpg-UK extra urban is less than 18.8 and the mpg-US turban is less than 7.2?
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 SUM("engine_capacity") FROM "see_also" WHERE "mpg_uk_urban_cold"<12.2 AND "mpg_uk_extra_urban"<18.8 AND "mpg_us_urban"<7.2;