What engine what in the vehicle when adt champion racing ranked in 1st place?
CREATE TABLE "complete_american_le_mans_series_results" (
  "year" real,
  "entrant" text,
  "class" text,
  "chassis" text,
  "engine" text,
  "tyres" text,
  "rank" text,
  "points" real
);
SELECT "engine" FROM "complete_american_le_mans_series_results" WHERE "rank"='1st' AND "entrant"='adt champion racing';