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_55 (chassis VARCHAR, points VARCHAR, engine VARCHAR, entrant VARCHAR)
### Question:
What is the chassis of Officine Alfieri Maserati with a Maserati Straight-6 engine and fewer than 6 points?
### Answer:
SELECT chassis FROM table_name_55 WHERE engine = "maserati straight-6" AND entrant = "officine alfieri maserati" AND points < 6