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_89 (year_startup VARCHAR, operator VARCHAR)
### Question:
What was the startup year for the project with a nioc operator?
### Answer:
SELECT year_startup FROM table_name_89 WHERE operator = "nioc"