21 https://w3id.org/arco/resource/Lombardia/Value/XC080-00260_R03-1-diameter-21 <https://w3id.org/italia/onto/MU/Value> rdfs:label 21 21 <https://w3id.org/italia/onto/MU/value> 21 rdf:type <https://w3id.org/italia/onto/MU/Value> <https://w3id.org/italia/onto/MU/hasMeasurementUnit> <https://w3id.org/arco/resource/Lombardia/MeasurementUnit/cm> data from the linked data cloud