fix date for NIAM BAS

dnet-ariadneplus-graphdb-publisher/src/main/resources/eu/dnetlib/ariadneplus/sparql/enrich/NIAM/ordered_sparql_insert_niam.sparql

@@ -1,3 +1,16 @@
+PREFIX aocat: <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/>
+DELETE DATA {
+GRAPH <https://ariadne-infrastructure.eu/api_________::ariadne_plus::niam::amb> {
+    <https://ariadne-infrastructure.eu/aocat/Resource/NIAM-BAS%2FAKB/6F5864D7-2371-30DD-8BB8-2304E33A3CA1> aocat:was_issued "9921-10-31"^^xsd:dateTime .
+    }
+};
+
+PREFIX aocat: <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/>
+INSERT DATA {
+GRAPH <https://ariadne-infrastructure.eu/api_________::ariadne_plus::niam::amb> {
+     <https://ariadne-infrastructure.eu/aocat/Resource/NIAM-BAS%2FAKB/6F5864D7-2371-30DD-8BB8-2304E33A3CA1> aocat:was_issued "1992-10-31"^^xsd:dateTime .
+    }
+};
 
 PREFIX aocat: <https://www.ariadne-infrastructure.eu/resource/ao/cat/1.1/>
 PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>