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_81 (lane INTEGER, heat VARCHAR, time VARCHAR)
### Question:
What is the highest lane for heat 6 with a time of dns?
### Answer:
SELECT MAX(lane) FROM table_name_81 WHERE heat = 6 AND time = "dns"