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

### Instruction:
Which Pick has a Round larger than 1, a School/Club Team of alcorn state, and a Position of defensive back?

### Inputs:
table_name: table, columns: ['Round', 'Pick', 'Player', 'Position', 'School/Club Team']

### Response:
SELECT SUM Pick FROM table WHERE Round > 1 AND School/Club Team = alcorn state AND Position = defensive back