-<gis = 'http://www.argeo.org/gis'>
+<gis = 'http://www.argeo.org/ns/gis'>
// GEOMETRIES (based on JTS http://www.vividsolutions.com/jts/JTSHome.htm)
[gis:coordinate] > nt:base
// GEOTOOLS
[gis:feature] > nt:base
mixin
+- gis:srs (STRING) m
+// WKB
+- gis:bbox (BINARY) m
+// WKB
+- gis:centroid (BINARY) m
//- gis:relatedNode (REFERENCE) *
[gis:featureSource] > nt:unstructured, mix:title