query: SELECT sum(total) FROM invoices WHERE billing_city  =  "Chicago" AND billing_state  =  "IL";
question: List total amount of   invoice from Chicago one , IL.
query_toks: SELECT sum ( total ) FROM invoices WHERE billing_city = `` Chicago '' AND billing_state = `` IL '' ;
query_toks_no_value: select sum ( total ) from invoices where billing_city = value and billing_state = value
question_toks: List total amount of invoice from Chicago one , IL.