https://w3id.org/framester/conceptnet5/data/en/ride_subway <https://w3id.org/framester/conceptnet5/schema/HasPrerequisite> <https://w3id.org/framester/conceptnet5/data/en/pay_subway_fare> <https://w3id.org/framester/conceptnet5/schema/MotivatedByGoal> <https://w3id.org/framester/conceptnet5/data/en/catch_cold> risorse dalla linked data cloud