メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.907380409867 34.8927673259769, 136.908000944918 34.8927008098954, 136.908475196374 34.8954819687998, 136.907873184316 34.8955242222603, 136.907942612709 34.8959261012397, 136.907434980141 34.8959278439154, 136.907062835957 34.8960997485466, 136.906969341209 34.8961357517864, 136.906933635025 34.8953630590531, 136.906890947717 34.8946885158805, 136.906887391311 34.894610114876, 136.906974296325 34.8945702222758, 136.90685088961 34.8928250162861, 136.906947745631 34.8928136709147, 136.907380409867 34.8927673259769)) ^^http://www.opengis.net/ont/geosparql#wktLiteral