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

### Instruction:
What is the highest overall pick from the College of Southern Mississippi that was selected before round 6?

### Inputs:
table_name: table, columns: ['Player', 'Position', 'Round', 'Overall', 'College']

### Response:
SELECT MAX Overall FROM table WHERE College = southern mississippi AND Round < 6