Assertion: dark wizard | /r/HasProperty | the master of the elder wand
Facets:
value: at that point
type: TEMPORAL
Source sentences:
text: According to wizard folklore, the Elder Wand used by its true master cannot be defeated in a duel; this is incorrect, for Dumbledore was able to defeat the legendary dark wizard Gellert Grindelwald, who was the master of the Elder Wand at that point.