text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE stock (Carrier VARCHAR, Device_ID VARCHAR); CREATE TABLE device (Carrier VARCHAR, Device_ID VARCHAR)
  ### Question:
  List the carriers of devices that have no devices in stock.
  ### Answer:
  SELECT Carrier FROM device WHERE NOT Device_ID IN (SELECT Device_ID FROM stock)