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 table_13150274_1 (client VARCHAR, area_of_operation VARCHAR)
  ### Question:
  Whose address of operation was the Echirax Concession? 
  ### Answer:
  SELECT client FROM table_13150274_1 WHERE area_of_operation = "EchiraX Concession"