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_46 (area_km_2 INTEGER, official_name VARCHAR)
### Question:
Notre-Dame-De-Lourdes has what average area km 2?
### Answer:
SELECT AVG(area_km_2) FROM table_name_46 WHERE official_name = "notre-dame-de-lourdes"