メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.886072803342 43.8200422310052, 143.885966515091 43.8208507750506, 143.885906609748 43.821359551996, 143.885780157631 43.8215656584554, 143.885561594263 43.8219196293709, 143.885490114505 43.8219268240712, 143.884873871847 43.8218878123813, 143.881911799186 43.8216949576855, 143.881958278874 43.8213336079292, 143.882001512566 43.8209959300618, 143.882013525082 43.8209022517145, 143.882144730023 43.8197802387105, 143.882787267556 43.8198225633476, 143.884254665902 43.8199192212521, 143.885641221713 43.8200143960174, 143.886072803342 43.8200422310052)) ^^http://www.opengis.net/ont/geosparql#wktLiteral