メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.770732846238 35.3283404431515, 136.77070059846 35.3290186807248, 136.770704533345 35.3303430530548, 136.77009621652 35.3303410745435, 136.768848557525 35.330328555896, 136.768213334799 35.3303281702613, 136.768230148103 35.329003790993, 136.768219017446 35.3283170290215, 136.768246392306 35.3273657976676, 136.768871620859 35.3272965711445, 136.76949889219 35.3272223486817, 136.770103492059 35.3271361463498, 136.77013802645 35.3271292870252, 136.770739300562 35.3270110276278, 136.770732846238 35.3283404431515)) ^^http://www.opengis.net/ont/geosparql#wktLiteral