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"): Dirk Werner Nowitzki (] ) (born June 19, 1978) is a German professional basketball player for the Dallas Mavericks of the National Basketball Association (NBA).
Relevant evidence: Yes