James O'Connor อยู่เขตใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What district did James O'Connor belong to?It is not neccessary to use all the tables.
 table_1342451_16:  district [ VARCHAR]  incumbent [ VARCHAR] 
SELECT district FROM table_1342451_16 WHERE incumbent = "James O'Connor"