メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.957866364358 35.2955156235369, 136.957953854616 35.2956877516108, 136.957994850885 35.2959688157604, 136.957962110501 35.2962380608924, 136.957959060376 35.2962630567358, 136.957635326173 35.2968819437834, 136.95701531131 35.2979142671558, 136.9567841338 35.2982991544925, 136.956694507444 35.2984344945566, 136.955762109466 35.2984262405631, 136.954480323293 35.2934650480926, 136.957003841315 35.2930004321248, 136.957805975834 35.2953503736354, 136.957866364358 35.2955156235369)) ^^http://www.opengis.net/ont/geosparql#wktLiteral