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

### Instruction:
What is Winner, when City / State is "Mallala , South Australia", and when Team is "Elfin Sports Cars"?

### Inputs:
table_name: table, columns: ['Circuit', 'City / State', 'Date', 'Winner', 'Team']

### Response:
SELECT Winner FROM table WHERE City / State = mallala , south australia AND Team = elfin sports cars