[elpescado]

https://en.wikipedia.org/wiki/Resource_Description_Framework ?

[anticristi]

Yeah, but no.

Having a graph for metadata feels overkill. I'd rather opt for key-values, like ID3 or EXIF.

The French expression "usine à gaz" comes to my mind: https://en.m.wiktionary.org/wiki/usine_%C3%A0_gaz