メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.812222164805 35.3184896929751, 136.812534865712 35.3193076687596, 136.811564739417 35.3195533576296, 136.811862750508 35.3203348165612, 136.81159140284 35.320464730865, 136.811133084443 35.3207286786071, 136.810866376952 35.3200066037191, 136.810769539965 35.3197649737155, 136.810602070735 35.3193114431449, 136.810411562784 35.3187969980117, 136.811184036019 35.3186029245997, 136.812169951543 35.3183443272074, 136.812222164805 35.3184896929751)) ^^http://www.opengis.net/ont/geosparql#wktLiteral