メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.035819296353 43.5637403588171, 142.035765073752 43.5641411817601, 142.035536371293 43.5641322146906, 142.03542834548 43.5648208858629, 142.035336233381 43.5656158822843, 142.034384898352 43.5655294130699, 142.034455222805 43.5650845599581, 142.034595320493 43.5640430563878, 142.034625436991 43.5638213064684, 142.034630225432 43.5637802093654, 142.034646608997 43.5636400815368, 142.034703937536 43.5632044176865, 142.035926461523 43.5632926912139, 142.035819296353 43.5637403588171)) ^^http://www.opengis.net/ont/geosparql#wktLiteral