https://w3id.org/framester/conceptnet5/data/en/unnecessary.a

<https://w3id.org/framester/conceptnet5/data/en/need>
<https://w3id.org/framester/conceptnet5/data/en/unrequired>
<https://w3id.org/framester/conceptnet5/data/en/requirement>

risorse dalla linked data cloud