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

### Instruction:
what was the primary conference when joining the csfl for the institution that joined in 2004-05?

### Inputs:
table_name: table, columns: ['Institution', 'Location', 'Founded', 'Type', 'Enrollment', 'Joined', 'Nickname', 'Primary Conference when joining the CSFL']

### Response:
SELECT Primary Conference when joining the CSFL FROM table WHERE Joined = 2004-05