CREATE TABLE table_name_66 (engine VARCHAR, driver VARCHAR, chassis VARCHAR)

What was the engine driven by Jean-Pierre Jarier and has a chassis of PC4?
SELECT engine FROM table_name_66 WHERE driver = "jean-pierre jarier" AND chassis = "pc4"
SELECT "engine" FROM "table_name_66" WHERE "chassis" = "pc4" AND "driver" = "jean-pierre jarier"