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

### Instruction:
What is Party, when District is less than 10, when Took Office is less than 1991, and when Home Town is Mount Pleasant?

### Inputs:
table_name: table, columns: ['Senator', 'Party', 'District', 'Home Town', 'Took Office']

### Response:
SELECT Party FROM table WHERE District < 10 AND Took Office < 1991 AND Home Town = mount pleasant