メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.403698758608 40.6772862284811, 141.403593209553 40.6776648929196, 141.401766630832 40.6775812792335, 141.400238683533 40.67753394614, 141.398902489419 40.6771631171273, 141.399386471154 40.6758705323546, 141.400199872598 40.6758784147178, 141.400433370669 40.6758802167341, 141.400624288749 40.6759059416643, 141.400960961934 40.6759974712521, 141.40107395395 40.676035515243, 141.401177619709 40.6760807542817, 141.401915103559 40.6764617044095, 141.402069641104 40.6765468042531, 141.4024019883 40.6766951382093, 141.402678693957 40.6768169643963, 141.40281991513 40.6768725331815, 141.402931730523 40.6769110368173, 141.403116184126 40.6769606396065, 141.403220975771 40.6770058171031, 141.403475820817 40.6771370152183, 141.403698758608 40.6772862284811)) ^^http://www.opengis.net/ont/geosparql#wktLiteral