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

### Instruction:
Which Source has a Clinton of 39% and a Undecided of 7%?

### Inputs:
table_name: table, columns: ['Source', 'Date', 'Clinton', 'Obama', 'Undecided']

### Response:
SELECT Source FROM table WHERE Clinton = 39% AND Undecided = 7%