Structured data (schema.org): correct some mistakes site-wide
Right now some artworks have been marked up with the schema type Painting. But lot's of artworks are not paintings.
See this installation/sculpture:
https://www.wikiart.org/en/arne-quinze/uchronia-2007
If implemented correctly, this should actually have different markup, ie this:
So if you go to the Structured Data Testing Tool from Google,
https://search.google.com/structured-data/testing-tool/u/0/?hl=nl#url=https%3A%2F%2Fwww.wikiart.org%2Fen%2Farne-quinze%2Fuchronia-2007
You should have @type: Painting change to @type: Sculpture.
This is important for WikiArt because it has an effect to the whole web and creates more context in what is known as the Knowledge Graph
