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_87 (instrumental VARCHAR, adverbial VARCHAR)
### Question:
What instrumental has chven-s as the adverbial?
### Answer:
SELECT instrumental FROM table_name_87 WHERE adverbial = "chven-s"