メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.914742238045 35.4971191078721, 136.913479583183 35.4972146655726, 136.913201125901 35.4950851848527, 136.913220863589 35.4937980449039, 136.913411021167 35.4939404828003, 136.91344919136 35.4939602807367, 136.914248587061 35.4943755376331, 136.914371580539 35.4944288558157, 136.914742238045 35.4971191078721)) ^^http://www.opengis.net/ont/geosparql#wktLiteral