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

### Instruction:
What is the highest Current Branch Opened, when Neighborhood is W. Portland Park?

### Inputs:
table_name: table, columns: ['Branch', 'Address', 'Neighborhood', 'First branch opened', 'Current branch opened']

### Response:
SELECT MAX Current branch opened FROM table WHERE Neighborhood = w. portland park