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_18 (unami_delaware VARCHAR, thomas__1698_ VARCHAR)
### Question:
What is the Unami Delaware value for a Thomas value of nacha?
### Answer:
SELECT unami_delaware FROM table_name_18 WHERE thomas__1698_ = "nacha"