メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.231303032938 36.6924721030124, 137.231118682452 36.6929693357089, 137.230929683905 36.6934202438062, 137.23076066411 36.6934216013362, 137.230742672596 36.6934825819506, 137.230677838044 36.6935755528234, 137.230612938222 36.6936104383078, 137.230511966006 36.6936337950946, 137.230454263724 36.6936396006248, 137.230266734344 36.6936832799913, 137.230111660865 36.6937153273442, 137.230106115914 36.693910072223, 137.22998843643 36.6938520490234, 137.22958215334 36.6936283727338, 137.22893014073 36.6932692929672, 137.228954703686 36.6927644027304, 137.228984450572 36.6924899459402, 137.22903527051 36.6920210192523, 137.229387474592 36.6920389996829, 137.230168850106 36.692080408507, 137.230853365454 36.6920901819156, 137.231432901207 36.6921033877019, 137.231303032938 36.6924721030124)) ^^http://www.opengis.net/ont/geosparql#wktLiteral