query: SELECT StuID FROM Student EXCEPT SELECT StuID FROM Participates_in
question: Show the ids of the students which don't participate in no activity.
query_toks: SELECT StuID FROM Student EXCEPT SELECT StuID FROM Participates_in
query_toks_no_value: select stuid from student except select stuid from participates_in
question_toks: Show the ids of the students which don't participate in no activity.