@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix ex: <http://example.com/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@base <http://example.com/base/> .

<TriplesMap1> a rr:TriplesMap;
    
  rml:logicalSource [ 
    rml:source "ious.xml";
    rml:referenceFormulation ql:XPath;
    rml:iterator "/persons/person"
  ];

  rr:subjectMap [ 
    rr:template "http://example.com/{fname};{lname}";
    rr:class foaf:Person;
  ];

  rr:predicateObjectMap [ 
    rr:predicate ex:owes; 
    rr:objectMap [ rml:reference "amount"; ]
  ].