query: SELECT customer_name ,  customer_phone FROM customers WHERE customer_id NOT IN (SELECT customer_id FROM mailshot_customers)
question: Show that name and phone of that customer without any mailshot.
query_toks: SELECT customer_name , customer_phone FROM customers WHERE customer_id NOT IN ( SELECT customer_id FROM mailshot_customers )
query_toks_no_value: select customer_name , customer_phone from customers where customer_id not in ( select customer_id from mailshot_customers )
question_toks: Show that name and phone of that customer without any mailshot.