For what it's worth, I just tried this with a contemporary painting I own that's not famous but sat least came through the gallery system and it was recognized
Edit: it just gives me a link to https://www.artsy.net/artwork/mark-andrew-bailey-ingess
It does not present any information like artist, size etc in the iOS interface when showing this painting, just the link. Still pretty cool.
I guess there was a single mention of a Havanese dog.