I want to write a SPARQL query to count how many times the foaf:account property is used and how to execute it in Java.
Can someone help me please?
In this case, i want the SPARQL query to return "2".
xmlns:foaf="http://xmlns.com/foaf/0.1/">
<foaf:Person rdf:about="https://someone">
<foaf:lastName>Surname</foaf:lastName>
<foaf:account>https://www.acc1.com</foaf:account>
<foaf:account>https://www.acc2.com</foaf:account>
<foaf:weblog>https://smth</foaf:weblog>
</foaf:Person>
</rdf:RDF><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
