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 cars_data (year VARCHAR, weight INTEGER)
### Question:
In which years cars were produced weighing no less than 3000 and no more than 4000 ?
### Answer:
SELECT DISTINCT year FROM cars_data WHERE weight BETWEEN 3000 AND 4000