I am new to RDF/XML notation and I am having trouble with addresses. I tried to google for examples but I can't find any; all I find are graphical notations, which isn't in the format I need. This is ...

This is my query, this query works fine for nodes with no blank node but the issue with arrives while updating with blank node here those nodes get repeated 100 times after updating DELETE { ...

I'm using Ontorefine within GraphDB to create RDF triples from a csv source. It seems impossible to add a rdf:type when the subject is a blank node. When you hit the arrow in the bottom right corner o...

I do not understand what is the difference between this SPARQL query : SELECT ?first ?last ?workTel WHERE { ?s ab:firstName ?first ; ab:lastName ?last . OPTIONAL {?s ab:workTel ?workTel . }...