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_7 (points INTEGER, chassis VARCHAR, year VARCHAR)
### Question:
For a year earlier than 1991 and a reynard 91d chassis, what's the highest points?
### Answer:
SELECT MAX(points) FROM table_name_7 WHERE chassis = "reynard 91d" AND year < 1991