what's the dbeingplacement (cm³) with torque (nm@rpm) being 350@1800-6000
CREATE TABLE "engines" (
  "model_name" text,
  "power_ps" real,
  "torque_nm_rpm" text,
  "displacement_cm" real,
  "engine_code" text,
  "comment" text
);
SELECT "displacement_cm" FROM "engines" WHERE "torque_nm_rpm"='350@1800-6000';