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

### Instruction:
Who is the GC leader at ávila - segovia?

### Inputs:
table_name: table, columns: ['Stage', 'Date', 'Course', 'Distance', 'Winner', 'GC Leader']

### Response:
SELECT GC Leader FROM table WHERE Course = ávila - segovia