query: SELECT Age FROM Student WHERE Fname = "Linda" AND Lname = "Smith";
question: What the age of student Linda Smith one?
query_toks: SELECT Age FROM Student WHERE Fname = `` Linda '' AND Lname = `` Smith '' ;
query_toks_no_value: select age from student where fname = value and lname = value
question_toks: What the age of student Linda Smith one?