メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.858706827893 43.3262961822013, 141.858753976912 43.3264648494405, 141.858947922478 43.3271521935691, 141.858047010337 43.3272909711238, 141.858007539831 43.3271827422682, 141.857800248278 43.3264356436093, 141.857456251148 43.3252187080192, 141.858344256165 43.3250818572841, 141.858594491539 43.3259143397789, 141.858706827893 43.3262961822013)) ^^http://www.opengis.net/ont/geosparql#wktLiteral