https://w3id.org/framester/conceptnet5/data/en/upholster_furniture_mc <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/market_industry> <https://w3id.org/framester/conceptnet5/data/en/market_category> <https://w3id.org/framester/conceptnet5/data/en/sale_product> risorse dalla linked data cloud