query: SELECT T1.last_name FROM Students AS T1 JOIN Addresses AS T2 ON T1.current_address_id  =  T2.address_id WHERE T2.state_province_county  =  'NorthCarolina' EXCEPT SELECT DISTINCT T3.last_name FROM Students AS T3 JOIN Student_Enrolment AS T4 ON T3.student_id  =  T4.student_id
question: Of the students who currently live in the state of North Carolina but have not registered in any degree program Find the last name.
query_toks: SELECT T1.last_name FROM Students AS T1 JOIN Addresses AS T2 ON T1.current_address_id = T2.address_id WHERE T2.state_province_county = 'NorthCarolina ' EXCEPT SELECT DISTINCT T3.last_name FROM Students AS T3 JOIN Student_Enrolment AS T4 ON T3.student_id = T4.student_id
query_toks_no_value: select t1 . last_name from students as t1 join addresses as t2 on t1 . current_address_id = t2 . address_id where t2 . state_province_county = value except select distinct t3 . last_name from students as t3 join student_enrolment as t4 on t3 . student_id = t4 . student_id
question_toks: Of the students who currently live in the state of North Carolina but have not registered in any degree program Find the last name.