メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.807710667454 35.292924581207, 136.807319800807 35.2927377828598, 136.807500394384 35.2924512055603, 136.807720814302 35.2920686196218, 136.807810061995 35.2921014206206, 136.808210631579 35.2922009920493, 136.808267660538 35.2922115132281, 136.807956069436 35.2927487597761, 136.807810767777 35.2928924838207, 136.80775722246 35.2929197194961, 136.807710667454 35.292924581207)) ^^http://www.opengis.net/ont/geosparql#wktLiteral