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_91 (points INTEGER, year VARCHAR, class VARCHAR)
### Question:
What is the smallest point amount for years prior to 1958 when the class is 350cc?
### Answer:
SELECT MIN(points) FROM table_name_91 WHERE year < 1958 AND class = "350cc"