query: SELECT StuID FROM Student WHERE age  =  (SELECT max(age) FROM Student)
question: Show the student id of the oldest student.
query_toks: SELECT StuID FROM Student WHERE age = ( SELECT max ( age ) FROM Student )
query_toks_no_value: select stuid from student where age = ( select max ( age ) from student )
question_toks: Show the student id of the oldest student.