メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.253864754087 36.0535286075636, 136.25384157891 36.0535282346848, 136.252536427366 36.0535071598867, 136.25153674769 36.053482802068, 136.250667467027 36.0534581641244, 136.24973032881 36.0534534990047, 136.249760584589 36.0518508476682, 136.25046957856 36.0518692106481, 136.250479224489 36.0514856242922, 136.251162364286 36.0514941132598, 136.252864306941 36.0515093148516, 136.253926186083 36.0515158613018, 136.25390611319 36.0520361355981, 136.253890807614 36.0524849628276, 136.253883783587 36.0526908953059, 136.253864754087 36.0535286075636)) ^^http://www.opengis.net/ont/geosparql#wktLiteral