メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.320583858321 43.1665106414483, 141.320711345836 43.1665936773759, 141.321279810537 43.1670212354679, 141.321673645662 43.1673132510654, 141.321787691592 43.1673959622566, 141.322564320107 43.1679931213963, 141.322909838767 43.1682597055769, 141.323194960469 43.1684729867382, 141.323344559569 43.168587631161, 141.323515495873 43.1687209436087, 141.323131397944 43.1688576611496, 141.322892262487 43.1689454019918, 141.322509368291 43.1691229891868, 141.322441999031 43.1691619706816, 141.321835814246 43.1694464144491, 141.321428436357 43.1696477138876, 141.321392906386 43.1696652899373, 141.320762176598 43.1691920034813, 141.320569910707 43.1690400832647, 141.319819592126 43.168489239867, 141.319267338419 43.16807594215, 141.318844363449 43.1677610261657, 141.318121566051 43.1672221377483, 141.317720721463 43.1669123192381, 141.317943223004 43.1667303614572, 141.31901277133 43.1659722641957, 141.319099085665 43.1659129748998, 141.319453168745 43.1656576750437, 141.319880305062 43.1659887996634, 141.320322132757 43.1663018261053, 141.320583858321 43.1665106414483)) ^^http://www.opengis.net/ont/geosparql#wktLiteral