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_37 (avoirdupois_value VARCHAR, russian VARCHAR)
### Question:
What Avoirdupois value has a Russian of берковец?
### Answer:
SELECT avoirdupois_value FROM table_name_37 WHERE russian = "берковец"