メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.970282412835 35.1856830306208, 136.970245214179 35.1859360076171, 136.969928955381 35.1859153535368, 136.969152874854 35.1858583906736, 136.968762657595 35.1858352903953, 136.968750834381 35.185784705083, 136.968731886859 35.1855344553782, 136.96870400629 35.1854293367785, 136.968692527961 35.1852640307472, 136.968948712685 35.1853375486641, 136.969506745138 35.1854660648955, 136.970178649587 35.1856540070452, 136.970282412835 35.1856830306208)) ^^http://www.opengis.net/ont/geosparql#wktLiteral