public static void main(String args[]) { String file = "/Users/mindaugas/r2rml/test26.ttl"; R2RMLReader reader = null; try { reader = new R2RMLReader(file); } catch (Exception e) { e.printStackTrace(); } ArrayList<OBDAMappingAxiom> axioms = reader.readMappings(); for (OBDAMappingAxiom ax : axioms) System.out.println(ax); }