メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.919865953966 34.9792662111725, 138.919282797095 34.9792525367868, 138.919176038542 34.9792563591631, 138.919085758426 34.979270195389, 138.918766407622 34.9793708205687, 138.91849067957 34.9792336702684, 138.918423000261 34.9791999594832, 138.918352493303 34.9791481578002, 138.918334747602 34.9791077234391, 138.918474170668 34.97855346749, 138.918680136918 34.9782983664642, 138.91872156253 34.9781594090352, 138.918771807275 34.9776791964905, 138.918802206643 34.977383222438, 138.919217542578 34.9774671350483, 138.920562625725 34.977608793303, 138.921515407434 34.9775293279377, 138.921591291661 34.9791479939744, 138.921433939841 34.9791378395206, 138.92126813441 34.9791560262069, 138.921170556039 34.9791731294586, 138.920781483522 34.9792414660885, 138.920583572951 34.9792641306892, 138.920005477537 34.9792529779434, 138.919865953966 34.9792662111725)) ^^http://www.opengis.net/ont/geosparql#wktLiteral