メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.870123979767 35.1165518209886, 136.869355973407 35.1165320968384, 136.869354897426 35.116568288262, 136.868685299578 35.1165559874034, 136.868734462879 35.1153198729456, 136.869392659142 35.1153239027891, 136.869394730764 35.1152560263932, 136.870168886893 35.1152783664821, 136.870156203501 35.1157261182534, 136.870123979767 35.1165518209886)) ^^http://www.opengis.net/ont/geosparql#wktLiteral