メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.225247837671 35.2586439360184, 136.225607823365 35.2593312339176, 136.223688453615 35.2609248263063, 136.223389292581 35.2605833960274, 136.222934654468 35.2609298421355, 136.222243205516 35.2601298216933, 136.221603661355 35.2593898624647, 136.222120398574 35.2591060388456, 136.222553627747 35.2588609706576, 136.222448755695 35.2587453855301, 136.222741061704 35.2585862718097, 136.223043752141 35.2584014353035, 136.224432446255 35.2577346458141, 136.224933269068 35.2583187347096, 136.225247837671 35.2586439360184)) ^^http://www.opengis.net/ont/geosparql#wktLiteral