
Here's a complex question that requires someone to reason about the input, can you answer it?
SV Werder Bremen won its first ever German double, clinching both Bundesliga and the DFB-Pokal, Werder lost both Aílton and defensive senior talisman Mladen Krstajić to Schalke 04, Krstajić is a former Serbian footballer who played as a centre back, born on which date?


4 March 1974
