メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.748136113521 43.155708267019, 141.7475222247 43.1554629942473, 141.747559719381 43.1560579461416, 141.747248320852 43.1559600107613, 141.746768876184 43.1559894050607, 141.746729451741 43.1556191515698, 141.746567450221 43.1555773636493, 141.746701401186 43.1553554287142, 141.746627859823 43.1546648773207, 141.746929079968 43.1547555965133, 141.747489786563 43.1549485931184, 141.747594245279 43.1549845701021, 141.747956854316 43.1551395589843, 141.74806560839 43.1551907458711, 141.748136113521 43.155708267019)) ^^http://www.opengis.net/ont/geosparql#wktLiteral