Head noun: trifocal
| Same concepts |
|---|
| http://dbpedia.org/resource/Trifocal |
Broader concepts
| label | provenance | confidence |
|---|---|---|
| multifocal lens | isap:380691349 | 0.510723 |
| other multifocal lens | isap:380691351 | 0.319870 |
| lens | isap:380691350 | 0.118054 |
| progressive | isap:83125632 | 0.088012 |
Narrower concepts
| label | provenance | confidence |
|---|