Question: What is the birth date of the member of the Spurs' who played center and retired before the 2003-04 NBA season?
Sentence (from "2003–04 San Antonio Spurs season"): The 2003-04 NBA season was the Spurs' 28th season in the National Basketball Association, the 31st in San Antonio, and 37th season as a franchise.
Relevant evidence: No