ใครคือผู้สมัครเมื่อ Jack Fields ดำรงตำแหน่ง?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Who were the candidates when Jack Fields was the incumbent?It is not neccessary to use all the tables.
 table_1341577_44:  (candidates [ VARCHAR ] incumbent [ VARCHAR) ]
SELECT candidates FROM table_1341577_44 WHERE incumbent = "Jack Fields"