List all classes (course_no, section_no) taught by Fernand Hanks (Use a correlated subquery) (9 rows).
What will be an ideal response?
```
SELECT last_name||', '||first_name
FROM student
WHERE student_id IN (SELECT student_id
FROM enrollment
WHERE section_id IN (SELECT section_id
FROM enrollment
GROUP BY section_id
HAVING COUNT(*) < 5))
```
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