query: SELECT avg(acc_bal) ,  acc_type FROM customer WHERE credit_score  <  50 GROUP BY acc_type
question: What is the average account balance of customers with credit score below 50 for the different account types?
query_toks: SELECT avg ( acc_bal ) , acc_type FROM customer WHERE credit_score < 50 GROUP BY acc_type
query_toks_no_value: select avg ( acc_bal ) , acc_type from customer where credit_score < value group by acc_type
question_toks: What is the average account balance of customers with credit score below 50 for the different account types?