What class has a capacity smaller than 3384 for Ferguson?
CREATE TABLE "classic_competition" (
  "driver" text,
  "navigator" text,
  "vehicle" text,
  "class" text,
  "capacity" real,
  "total_time" text,
  "margin" text
);
SELECT "class" FROM "classic_competition" WHERE "capacity"<3384 AND "navigator"='ferguson';