https://w3id.org/framester/conceptnet5/data/en/continuous_time_interval <https://w3id.org/framester/conceptnet5/schema/IsA> <https://w3id.org/framester/conceptnet5/data/en/time_period> <https://w3id.org/framester/conceptnet5/data/en/temporally_continuous_thing> <https://w3id.org/framester/conceptnet5/data/en/calendar_time_topic> risorse dalla linked data cloud