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_16175217_1 (children_per_donor VARCHAR, allowed_recipients VARCHAR)
### Question:
List the possible children per donor levels for countries where the allowed recipients is no data.
### Answer:
SELECT children_per_donor FROM table_16175217_1 WHERE allowed_recipients = "no data"