メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.368051263088 43.7394357209028, 142.368714018932 43.7396430256788, 142.368088604054 43.7407783297184, 142.367724618848 43.7414361239854, 142.367590793213 43.7414055152786, 142.367584303518 43.7414220813811, 142.36729054697 43.7418864535025, 142.366763667827 43.7417282446302, 142.366088935488 43.7415256177453, 142.366075325737 43.7415215172004, 142.366321864287 43.7410542611913, 142.366690136775 43.7403562607134, 142.367285898752 43.7391963119663, 142.368051263088 43.7394357209028)) ^^http://www.opengis.net/ont/geosparql#wktLiteral