https://w3id.org/framester/conceptnet5/data/en/american_food <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/cuisine> <https://w3id.org/framester/conceptnet5/data/en/north_american_cuisine> <https://w3id.org/framester/conceptnet5/data/en/dangerous_food> risorse dalla linked data cloud