メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.314800954832 43.0618989160144, 141.314913537452 43.0619129882338, 141.315757473089 43.0620283287902, 141.315686644213 43.0623277742772, 141.315607124143 43.0626247568715, 141.315577328788 43.0627361251904, 141.315560720002 43.0627812818184, 141.315157049573 43.0630370756206, 141.315089543439 43.06307365771, 141.3149837251 43.0631507178974, 141.314527573685 43.0634387131991, 141.314080434678 43.0630649856043, 141.314198027056 43.0625609160639, 141.314232218513 43.0624256015519, 141.314381744687 43.0618461185667, 141.314800954832 43.0618989160144)) ^^http://www.opengis.net/ont/geosparql#wktLiteral