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

### Instruction:
What is the total enrollment at the school that has the nickname of the Fightin' Blue Hens?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Founded', 'Affiliation', 'Enrollment', 'Nickname', 'Primary conference']

### Response:
SELECT COUNT Enrollment FROM table WHERE Nickname = fightin' blue hens