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

### Instruction:
What is the amount of marginal ordinary income tax rate for single in which the range is $8,351– $33,950?

### Inputs:
table_name: table, columns: ['Marginal Ordinary Income Tax Rate', 'Single', 'Married Filing Jointly or Qualified Widow(er)', 'Married Filing Separately', 'Head of Household']

### Response:
SELECT COUNT Marginal Ordinary Income Tax Rate FROM table WHERE Single = $8,351– $33,950