メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.339178250882 35.7333937630056, 139.33868435392 35.7334378581798, 139.338789658293 35.7330982628405, 139.339151978374 35.7330955079485, 139.339178250882 35.7333937630056)) ^^http://www.opengis.net/ont/geosparql#wktLiteral