メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.181156118321 34.7922596707202, 137.181115158722 34.7923498230619, 137.181074207933 34.7924850468622, 137.179844656057 34.7912456714662, 137.179967572359 34.7911667798051, 137.180145124294 34.7910991502673, 137.18025436637 34.7909301132626, 137.180377277625 34.7908399528447, 137.180527491424 34.7906596426006, 137.180595760017 34.7905131465786, 137.180636706301 34.7903553853454, 137.180691309128 34.7901863541848, 137.180677613283 34.7899947942793, 137.180704917854 34.7899271811706, 137.180759535627 34.7898257599002, 137.1813606852 34.790648276018, 137.181374432088 34.7910877389752, 137.181388158855 34.7914370553235, 137.181347229025 34.7916624267326, 137.181156118321 34.7922596707202)) ^^http://www.opengis.net/ont/geosparql#wktLiteral