メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.037052747569 34.9688873719325, 137.036412224018 34.9691302955966, 137.03607736514 34.9684386316951, 137.035928534387 34.9670994533475, 137.037121018511 34.9664506201733, 137.037521451408 34.9669520585158, 137.037841234967 34.9673968579569, 137.037857288779 34.9674175101862, 137.037017460122 34.9677907954413, 137.036731718158 34.9682184730774, 137.037052747569 34.9688873719325)) ^^http://www.opengis.net/ont/geosparql#wktLiteral