add triples function to transform features back to RDF nodes

yago45en.py

@@ -55,3 +55,15 @@ class YAGO45DatasetBuilder(GeneratorBasedBuilder):
                     'object': o.n3()
                 }
                 id_ += 1
+
+from rdflib.util import from_n3
+
+def triples(features):
+    try:
+        subject_node = from_n3(features['subject'])
+        predicate_node = from_n3(features['predicate'])
+        object_node = from_n3(features['object'])
+        return (subject_node, predicate_node, object_node)
+    except Exception as e:
+        print(f"Error transforming features {features}: {e}")
+        return (None, None, None)