メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.952159356 35.1555901592141, 136.951546926699 35.1556323207794, 136.951148318544 35.1558197178409, 136.950665985617 35.1549444187025, 136.951059833199 35.1547888456558, 136.951044833914 35.154761565662, 136.95160690387 35.1546526976057, 136.952159356 35.1555901592141)) ^^http://www.opengis.net/ont/geosparql#wktLiteral