query: SELECT avg(num_of_staff) ,  avg(score) FROM shop
question: What-all are the average score and average staffs number of all shops?
query_toks: SELECT avg ( num_of_staff ) , avg ( score ) FROM shop
query_toks_no_value: select avg ( num_of_staff ) , avg ( score ) from shop
question_toks: What-all are the average score and average staffs number of all shops?