Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_10 ( year INTEGER, chassis VARCHAR, points VARCHAR )

### Question ###
What is the year with a Kurtis Kraft 500a chassis, and less than 1.5 points?

### Accurate SQL ###

SELECT SUM(year) FROM table_name_10 WHERE chassis = "kurtis kraft 500a" AND points < 1.5