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

### Instruction:
What is Karen Handel polling at in the Insideradvantage poll where John Oxendine is at 15%?

### Inputs:
table_name: table, columns: ['Poll source', 'Dates administered', 'John Oxendine', 'Karen Handel', 'Nathan Deal', 'Eric Johnson', 'Ray McBerry', 'Undecided']

### Response:
SELECT Karen Handel FROM table WHERE Poll source = insideradvantage AND John Oxendine = 15%