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_42 (instrumental VARCHAR, genitive VARCHAR)
### Question:
What instrumental has tkven-i as the genitive?
### Answer:
SELECT instrumental FROM table_name_42 WHERE genitive = "tkven-i"