Question: Was Lucrezia Tornabuoni the mother of Lorenzo de' Medici?
SPARQL query: ASK WHERE { <http://dbpedia.org/resource/Lorenzo_de'_Medici> <http://dbpedia.org/property/mother> <http://dbpedia.org/resource/Lucrezia_Tornabuoni> }
Answer: [Yes], Lucrezia Tornabuoni is the mother of Lorenzo de' Medici.