メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.813282594211 35.3091768905517, 136.812955911069 35.3096227031889, 136.812620527562 35.3100584189305, 136.811416706428 35.3094466438555, 136.811509355893 35.3093289565828, 136.811746918763 35.3090113388618, 136.811731723036 35.309003970255, 136.812078159229 35.3085654723253, 136.813282594211 35.3091768905517)) ^^http://www.opengis.net/ont/geosparql#wktLiteral