Find the name of the person who has no student friends.
SELECT name FROM person EXCEPT SELECT T2.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name  =  T2.friend WHERE T1.job  =  'student'
SELECT name FROM person EXCEPT SELECT T2.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name  =  T2.friend WHERE T1.job  =  'student'
[{'name': 'Alice'}, {'name': 'Bob'}, {'name': 'Dan'}]