query: SELECT fname ,  lname FROM student WHERE age  <  (SELECT avg(age) FROM student)
question: What the first and last name all student who are more younger average?
query_toks: SELECT fname , lname FROM student WHERE age < ( SELECT avg ( age ) FROM student )
query_toks_no_value: select fname , lname from student where age < ( select avg ( age ) from student )
question_toks: What the first and last name all student who are more younger average?