About: optical format

Premodifier: optical
Head noun: format

Same concepts
http://dbpedia.org/resource/Optical_format

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
blu-ray disc	isap:311228569	0.707621
blu ray	isap:211370381	0.568685
dvd	isap:214765455	0.483726
cd	isap:108137127	0.398800