[Bakha]

Right. You could attach exact numbers to it, but it might look something like this:

Person A:
A person well-versed in Sablean culture sees the painting and they see:
"Starry Night" as the sdesc.

Person B:
A person somewhat well-versed in Sablean culture sees instead:
A painting of a swirling night sky.
When they look at it more closely, they might see:
"This painting looks to be Starry Night."

Person C:
A person with little understanding of Sablean culture sees:
"A painting of a swirling night sky."
When they look at the painting more closely, they still get no indication of proper name.

Now imagine this scenario:
Person C, while ignorant of Sablean culture is well-versed in Thracian culture. Now imagine that the item Starry Night has gotten so well-known that it's crossed cultural boundaries. It receives a 100% value rating in Sablean culture as well as a 100% value rating in Thracian culture because the artist has become famous in both cultures. Now Person C will get the same message as person A did above because the item itself has transcended its culture and people from both Sablean and Thracian cultures know of the item.

This system could get ridiculously clunky, but it could also be interesting.