The nissan primera p12 nissan almera n16 has what C.R.?
CREATE TABLE "engine_reference" (
  "code" text,
  "vehicle" text,
  "year" text,
  "displacement" text,
  "bore" text,
  "stroke" text,
  "c_r" text,
  "max_power" text
);
SELECT "c_r" FROM "engine_reference" WHERE "vehicle"='nissan primera p12 nissan almera n16';