メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.317974237198 43.7698485441044, 142.31723786167 43.7702317377555, 142.316697785981 43.7705159046695, 142.316162140683 43.7708032844038, 142.315733360054 43.7703950491785, 142.315326809386 43.7699964345277, 142.315014045526 43.7701445682784, 142.314813955791 43.7699356146474, 142.315143656146 43.7695573093369, 142.316115233612 43.7689001979234, 142.316307581956 43.7688500012541, 142.316835599722 43.7687145903197, 142.317046369946 43.768658176306, 142.317380301385 43.7685992973482, 142.317981601471 43.7685008275104, 142.318437571919 43.7684306047458, 142.318531077792 43.7684175748276, 142.318646145059 43.7684015255854, 142.319638023865 43.7682996134142, 142.319466599802 43.7687926536053, 142.319362643239 43.7690998807559, 142.318978958903 43.7693140123958, 142.318809289923 43.7694017700288, 142.317974237198 43.7698485441044)) ^^http://www.opengis.net/ont/geosparql#wktLiteral