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

### Instruction:
What were the dates administered in the Survey USA poll source where Republican Christopher Reed received 37%?

### Inputs:
table_name: table, columns: ['Poll Source', 'Dates administered', 'Democrat: Tom Harkin', 'Republican: Christopher Reed', 'Lead Margin']

### Response:
SELECT Dates administered FROM table WHERE Poll Source = survey usa AND Republican: Christopher Reed = 37%