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_15 (opponents VARCHAR, partner VARCHAR)
### Question:
What is the name of the opponent when anastasia pivovarova was the partner?
### Answer:
SELECT opponents FROM table_name_15 WHERE partner = "anastasia pivovarova"