Below is an instruction that describes a task. Write a response that appropriately completes the request.

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

### Inputs:
table_name: table, columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']

### Response:
SELECT SUM Year FROM table WHERE Chassis = kurtis kraft 500a AND Points < 1.5