CREATE TABLE "fleet_statistics" (
  "manufacturer" text,
  "model" text,
  "year_built" real,
  "vehicle_length" text,
  "fuel_type" text,
  "num_in_fleet" real
);

Question: What is the Manufacturer with a Fuel Type that is diesel?
SQL: SELECT "manufacturer" FROM "fleet_statistics" WHERE "fuel_type"='diesel';