nsmap = {
    "gen": "http://www.opengis.net/citygml/generics/2.0",
    "gml": "http://www.opengis.net/gml",
    "core": "http://www.opengis.net/citygml/2.0",
    "bldg": "http://www.opengis.net/citygml/building/2.0",
    "tran": "http://www.opengis.net/citygml/transportation/2.0",
    "brid": "http://www.opengis.net/citygml/bridge/2.0",
    "xlink": "http://www.w3.org/1999/xlink",
    "xAL": "urn:oasis:names:tc:ciq:xsdschema:xAL:2.0",
    "uro": "https://www.geospatial.jp/iur/uro/2.0",
}
