https://w3id.org/framester/conceptnet5/data/en/rain_gauge <https://w3id.org/framester/conceptnet5/schema/DerivedFrom> <https://w3id.org/framester/conceptnet5/data/en/gauge.n> <https://w3id.org/framester/conceptnet5/schema/UsedFor> <https://w3id.org/framester/conceptnet5/data/en/measure_rainfall> risorse dalla linked data cloud