diff --git a/CityGMLTutorial/LOD1Solid_CityGML3.gml b/CityGMLTutorial/LOD1Solid_CityGML3.gml
deleted file mode 100644
index 96fa997b15291ffd693cbd9256c5330a6b0f0352..0000000000000000000000000000000000000000
--- a/CityGMLTutorial/LOD1Solid_CityGML3.gml
+++ /dev/null
@@ -1,75 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<CityModel gml:id="cm1" xmlns:app="http://www.opengis.net/citygml/appearance/3.0" xmlns:brid="http://www.opengis.net/citygml/bridge/3.0" xmlns:bldg="http://www.opengis.net/citygml/building/3.0" xmlns:frn="http://www.opengis.net/citygml/cityfurniture/3.0" xmlns:grp="http://www.opengis.net/citygml/cityobjectgroup/3.0" xmlns:con="http://www.opengis.net/citygml/construction/3.0" xmlns:pcl="http://www.opengis.net/citygml/pointcloud/3.0" xmlns:core="http://www.opengis.net/citygml/3.0" xmlns:dyn="http://www.opengis.net/citygml/dynamizer/3.0" xmlns:gen="http://www.opengis.net/citygml/generics/3.0" xmlns:luse="http://www.opengis.net/citygml/landuse/3.0" xmlns:dem="http://www.opengis.net/citygml/relief/3.0" xmlns:tran="http://www.opengis.net/citygml/transportation/3.0" xmlns:tun="http://www.opengis.net/citygml/tunnel/3.0" xmlns:veg="http://www.opengis.net/citygml/vegetation/3.0" xmlns:vers="http://www.opengis.net/citygml/versioning/3.0" xmlns:wtr="http://www.opengis.net/citygml/waterbody/3.0" xmlns:tsml="http://www.opengis.net/tsml/1.0" xmlns:sos="http://www.opengis.net/sos/2.0" xmlns:xAL="urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:ade="http://www.3dcitydb.org/citygml-ade/3.0/citygml/1.0" xmlns="http://www.opengis.net/citygml/3.0" xsi:schemaLocation="http://www.opengis.net/citygml/appearance/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/appearance.xsd http://www.opengis.net/citygml/bridge/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/bridge.xsd http://www.opengis.net/citygml/building/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/building.xsd http://www.opengis.net/citygml/cityfurniture/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/cityFurniture.xsd http://www.opengis.net/citygml/cityobjectgroup/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/cityObjectGroup.xsd http://www.opengis.net/citygml/construction/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/construction.xsd http://www.opengis.net/citygml/pointcloud/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/pointCloud.xsd http://www.opengis.net/citygml/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/cityGMLBase.xsd http://www.opengis.net/citygml/dynamizer/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/dynamizer.xsd http://www.opengis.net/citygml/generics/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/generics.xsd http://www.opengis.net/citygml/landuse/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/landUse.xsd http://www.opengis.net/citygml/relief/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/relief.xsd http://www.opengis.net/citygml/transportation/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/transportation.xsd http://www.opengis.net/citygml/tunnel/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/tunnel.xsd http://www.opengis.net/citygml/vegetation/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/vegetation.xsd http://www.opengis.net/citygml/versioning/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/versioning.xsd http://www.opengis.net/citygml/waterbody/3.0 http://www.3dcitydb.org/citygml3/2019-06-05/xsds/waterBody.xsd http://www.opengis.net/tsml/1.0 http://schemas.opengis.net/tsml/1.0/timeseriesML.xsd http://www.opengis.net/sos/2.0 http://schemas.opengis.net/sos/2.0/sosGetObservation.xsd urn:oasis:names:tc:ciq:xsdschema:xAL:2.0 http://schemas.opengis.net/citygml/xAL/xAL.xsd">
-    <gml:boundedBy xmlns:sch="http://www.ascc.net/xml/schematron" xmlns:smil20lang="http://www.w3.org/2001/SMIL20/Language" xmlns:pbase="http://www.opengis.net/citygml/profiles/base/2.0" xmlns:smil20="http://www.w3.org/2001/SMIL20/">
-        <gml:Envelope srsDimension="3">
-            <gml:lowerCorner>0 0 0</gml:lowerCorner>
-            <gml:upperCorner>1.3900000000000001 1.03 1.7500000000000002</gml:upperCorner>
-        </gml:Envelope>
-    </gml:boundedBy>
-    <core:cityObjectMember xmlns:sch="http://www.ascc.net/xml/schematron" xmlns:smil20lang="http://www.w3.org/2001/SMIL20/Language" xmlns:pbase="http://www.opengis.net/citygml/profiles/base/2.0" xmlns:smil20="http://www.w3.org/2001/SMIL20/">
-        <bldg:Building gml:id="UUID_7b5f1bf0-00d9-4bb4-9f11-55d908b64569">
-            <lod1Solid>
-                <gml:Solid gml:id="UUID_7b5f1bf0-00d9-4bb4-9f11-55d908b64569_sl_N65572" srsDimension="3">
-                    <gml:exterior>
-                        <gml:Shell>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>1.3900000000000001 1.03 0 0 1.03 0 0 1.03 1.7500000000000002 1.3900000000000001 1.03 1.7500000000000002 1.3900000000000001 1.03 0</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>1.3900000000000001 0 1.7500000000000002 1.3900000000000001 0 0 1.3900000000000001 1.03 0 1.3900000000000001 1.03 1.7500000000000002 1.3900000000000001 0 1.7500000000000002</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>0 1.03 1.7500000000000002 0 0 1.7500000000000002 1.3900000000000001 0 1.7500000000000002 1.3900000000000001 1.03 1.7500000000000002 0 1.03 1.7500000000000002</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>0 1.03 0 0 0 0 0 0 1.7500000000000002 0 1.03 1.7500000000000002 0 1.03 0</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>1.3900000000000001 1.03 0 1.3900000000000001 0 0 0 0 0 0 1.03 0 1.3900000000000001 1.03 0</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                            <gml:surfaceMember>
-                                <gml:Polygon>
-                                    <gml:exterior>
-                                        <gml:LinearRing>
-                                            <gml:posList>0 0 1.7500000000000002 0 0 0 1.3900000000000001 0 0 1.3900000000000001 0 1.7500000000000002 0 0 1.7500000000000002</gml:posList>
-                                        </gml:LinearRing>
-                                    </gml:exterior>
-                                </gml:Polygon>
-                            </gml:surfaceMember>
-                        </gml:Shell>
-                    </gml:exterior>
-                </gml:Solid>
-            </lod1Solid>
-        </bldg:Building>
-    </core:cityObjectMember>
-</CityModel>