https://w3id.org/framester/conceptnet5/data/en/surface_tension <https://w3id.org/framester/conceptnet5/schema/ReceivesAction> <https://w3id.org/framester/conceptnet5/data/en/consider_as_surface_energy> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/surfactant> risorse dalla linked data cloud