メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.231645432384 34.838590178205, 137.230675220465 34.8387597326327, 137.230169582745 34.8388050755514, 137.228283644755 34.8389187413405, 137.22809197887 34.8384680764908, 137.227886590955 34.8379385353009, 137.228050549707 34.8378821066073, 137.228965939115 34.8375097570802, 137.229840320204 34.8371374206581, 137.230619079433 34.8368327422138, 137.231042627216 34.8366860169388, 137.231261813012 34.8373620475562, 137.231645432384 34.838590178205)) ^^http://www.opengis.net/ont/geosparql#wktLiteral