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_49 (year INTEGER, entrant VARCHAR, points VARCHAR)
### Question:
Name the sum of year for connaught engineering and points less than 0
### Answer:
SELECT SUM(year) FROM table_name_49 WHERE entrant = "connaught engineering" AND points < 0