https://w3id.org/framester/conceptnet5/data/en/character_string_token <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/notation> <https://w3id.org/framester/conceptnet5/data/en/human_culture_specific_information_bear_thing> risorse dalla linked data cloud