Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:

Convert text to sql: Which colleges have both authors with submission score above 90 and authors with submission score below 80? | workshop : workshop_id , date , venue , name | submission : submission_id , scores , author , college | acceptance : submission_id , workshop_id , result | acceptance.workshop_id = workshop.workshop_id | acceptance.submission_id = submission.submission_id | 

### Response:

select _ from _ where _ intersect select _ from _ where _ | select college from submission where scores > 90 intersect select college from submission where scores < 80