What is the class of team liqui moly equipe, which has less than 71 laps?
CREATE TABLE "official_results" (
  "class" text,
  "team" text,
  "driver" text,
  "chassis_engine" text,
  "laps" real
);
SELECT "class" FROM "official_results" WHERE "laps"<71 AND "team"='liqui moly equipe';