https://w3id.org/framester/conceptnet5/data/en/kerb <https://w3id.org/framester/conceptnet5/schema/AtLocation> <https://w3id.org/framester/conceptnet5/data/en/street> <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/cla/de.bordstein> risorse dalla linked data cloud