メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.735039948285 35.4077379804074, 136.733715664966 35.407399448133, 136.73400644708 35.4060013034955, 136.735374468679 35.4061822436018, 136.735329550049 35.4063963029375, 136.735142838863 35.4073059651309, 136.735039948285 35.4077379804074)) ^^http://www.opengis.net/ont/geosparql#wktLiteral