https://w3id.org/framester/conceptnet5/data/en/spruce_tree <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/biological_genus> <https://w3id.org/framester/conceptnet5/data/en/tree> <https://w3id.org/framester/conceptnet5/data/en/pine_family> risorse dalla linked data cloud