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

### Instruction:
What is the lower turnout that has a byut of 50.7 and an ou psd smaller than 36.8?

### Inputs:
table_name: table, columns: ['Region', 'Voter registration', 'Voter turnout', 'BYuT', 'OU-PSD']

### Response:
SELECT MIN Voter turnout FROM table WHERE BYuT = 50.7 AND OU-PSD < 36.8