https://w3id.org/framester/conceptnet5/data/en/ferroelectric.a <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/crystalline> <https://w3id.org/framester/conceptnet5/data/en/permanent> <https://w3id.org/framester/conceptnet5/data/en/electrical> <https://w3id.org/framester/conceptnet5/data/en/electric_field> <https://w3id.org/framester/conceptnet5/data/en/dielectric> <https://w3id.org/framester/conceptnet5/data/en/polarization> risorse dalla linked data cloud