Question: Silke Nowitzki (born July 12, 1974 in Würzburg, West Germany) is a German former international basketball player, she is the manager of her brother, Dirk Werner Nowitzki, a German professional basketball player, for the Dallas Mavericks of which organization?
Sentence (from "Dirk Nowitzki: German Wunderkind"): It follows Nowitzki's life as a boy in Würzburg, how he turned to basketball as a teenager, broke through in Germany and eventually became the franchise player of the Dallas Mavericks in the NBA.
Relevant evidence: No