query: SELECT Fname FROM STUDENT WHERE StuID NOT IN (SELECT StuID FROM ENROLLED_IN)
question: Do Find that first name of students not enroll in no course.
query_toks: SELECT Fname FROM STUDENT WHERE StuID NOT IN ( SELECT StuID FROM ENROLLED_IN )
query_toks_no_value: select fname from student where stuid not in ( select stuid from enrolled_in )
question_toks: Do Find that first name of students not enroll in no course.