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

### Instruction:
What party has a term of office of 1951–1966, and a State of sa?

### Inputs:
table_name: table, columns: ['Member', 'Party', 'Electorate', 'State', 'Term of office']

### Response:
SELECT Party FROM table WHERE Term of office = 1951–1966 AND State = sa