https://w3id.org/framester/conceptnet5/data/en/lumen.n

<https://w3id.org/framester/conceptnet5/data/en/steradian>
<https://w3id.org/framester/conceptnet5/data/en/solid_angle>
<https://w3id.org/framester/conceptnet5/data/en/catheter>
<https://w3id.org/framester/conceptnet5/data/en/international_system_of_unit>
<https://w3id.org/framester/conceptnet5/data/en/candela>
<https://w3id.org/framester/conceptnet5/data/en/derive_unit>
<https://w3id.org/framester/conceptnet5/data/en/lm>
<https://w3id.org/framester/conceptnet5/data/en/luminous_flux>

risorse dalla linked data cloud