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_96 (est VARCHAR, league VARCHAR, state_province VARCHAR, city VARCHAR)
### Question:
In what year was the NFL team in chicago illinois established?
### Answer:
SELECT est FROM table_name_96 WHERE state_province = "illinois" AND city = "chicago" AND league = "nfl"