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_71 (date VARCHAR, competition VARCHAR, venue VARCHAR)
### Question:
Name the date that has a friendly competition at rheinpark stadion, vaduz
### Answer:
SELECT date FROM table_name_71 WHERE competition = "friendly" AND venue = "rheinpark stadion, vaduz"