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_name_42 (years_of_operation VARCHAR, area_of_operation VARCHAR)
### Question:
What years was El Mabrouk the area of operation?
### Answer:
SELECT years_of_operation FROM table_name_42 WHERE area_of_operation = "el mabrouk"