Task: Question Understanding
Input (English): Context : George Alan Prescott (17 June 1927 in Widnes, Lancashire -- 20 September 1998) was an English rugby league footballer and coach of the 1940s, '50s and '60s, playing initially at Wing, and then later at Prop, Second-row, or Loose forward/Lock. 
Question : What is the date of Alan Prescott's death?
Output (English): date of death