query: SELECT fname FROM student WHERE city_code  =  'PHL' AND age BETWEEN 20 AND 25
question: What is the first name of the students which are in age 20 to 25 and living in PHL city?
query_toks: SELECT fname FROM student WHERE city_code = 'PHL ' AND age BETWEEN 20 AND 25
query_toks_no_value: select fname from student where city_code = value and age between value and value
question_toks: What is the first name of the students which are in age 20 to 25 and living in PHL city?