diff --git a/ch05/05-03/ex012.ttl b/ch05/05-03/ex012.ttl
new file mode 100644
index 0000000..8038c95
--- /dev/null
+++ b/ch05/05-03/ex012.ttl
@@ -0,0 +1,23 @@
+# filename: ex012.ttl
+
+@prefix ab: <http://learningsparql.com/ns/addressbook#> .
+@prefix d:  <http://learningsparql.com/ns/data#> .
+
+d:i0432     ab:firstName    "Richard" .
+d:i0432     ab:lastName     "Mutt" .
+d:i0432     ab:homeTel      "(229) 276-5135" .
+d:i0432     ab:email        "ricard49@hotmail.com" .
+
+d:i9771     ab:firstName    "Cindy" .
+d:i9771     ab:lastName     "Marshall" .
+d:i9771     ab:homeTel      "(245) 646-5488" .
+d:i9771     ab:email        "cindym@gmail.com" .
+
+d:i8301     ab:firstName    "Craig" .
+d:i8301     ab:lastName     "Ellis" .
+d:i8301     ab:email        "craigellis@yahoo.com" .
+d:i8301     ab:email        "c.ellis@usairwaysgroup.com" .
+
+d:i8302     ab:firstName    "Craig" .
+d:i8302     ab:lastName     "Wright" .
+d:i8302     ab:email        "craig.w@outlook.com" .
\ No newline at end of file
diff --git a/ch05/05-03/ex308.rq b/ch05/05-03/ex308.rq
new file mode 100644
index 0000000..eb4902c
--- /dev/null
+++ b/ch05/05-03/ex308.rq
@@ -0,0 +1,15 @@
+# filename: ex308.rq
+
+# PREFIX afn: <http://jena.hpl.hp.com/ARQ/function#>
+PREFIX afn: <http://jena.apache.org/ARQ/function#>
+PREFIX d:   <http://learningsparql.com/ns/data#>
+
+SELECT DISTINCT ?s ?sLocalname ?sNamespace
+FROM <ex012.ttl>
+WHERE {
+    ?s ?p ?o .
+    BIND (afn:localname(?s) AS ?sLocalname)
+    BIND (afn:namespace(?s) AS ?sNamespace)
+}
+
+# new prefix from https://jena.apache.org/documentation/query/library-function.html
\ No newline at end of file