メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((134.899554232558 35.3736956939578, 134.902258542999 35.377381777596, 134.886861288541 35.3822083512098, 134.883472102968 35.3808086662581, 134.899554232558 35.3736956939578)) ^^http://www.opengis.net/ont/geosparql#wktLiteral