https://w3id.org/framester/conceptnet5/cla/la.difficultas.n

<https://w3id.org/framester/conceptnet5/data/en/distress>
<https://w3id.org/framester/conceptnet5/data/en/trouble>
<https://w3id.org/framester/conceptnet5/data/en/difficulty>

risorse dalla linked data cloud