SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/property/mother> <http://dbpedia.org/resource/Bertrada_of_Laon> }
Whose mam is Bertrada of Laon?
SELECT DISTINCT ?d WHERE { ?d property:mother resource:Bertrada_of_Laon }
Charlemagne
[Charlemagne] is the child Bertrada of Laon.
[Charlemagne] is the child of Bertrand of Laon.
[Charlemagne] is the child Bertrada of Laon.
[Charlemagne] is the child of Bertrand of Laon.