https://w3id.org/framester/conceptnet5/data/en/piece_of_technology

<https://w3id.org/framester/conceptnet5/data/en/generic_artifact>
<https://w3id.org/framester/conceptnet5/data/en/unnatural_thing>
<https://w3id.org/framester/conceptnet5/data/en/thing_exist_stably_in_time>

risorse dalla linked data cloud