CREATE TABLE "drivers_and_constructors" (
  "entrant" text,
  "constructor" text,
  "chassis" text,
  "engine" text,
  "tyres" text,
  "driver" text,
  "rounds" text
);

Question: What was the engine driven by Jean-Pierre Jarier and has a chassis of PC4?
SQL: SELECT "engine" FROM "drivers_and_constructors" WHERE "driver"='jean-pierre jarier' AND "chassis"='pc4';