Unfortunately Wikidata's single-item-based view, coupled with inconsistent modelling across different countries, makes it really difficult to see what's missing or incorrect...
Wikidata modelling is a complete disaster: basically nothing has a solid, documented and maintained model, and no one appears to be working on it very much compared to the amount of poorly-modelled data being poured in.
I'm surprised anyone gets anything of use out of Wikidata. Which is an enormous pity, because it's got incredible potential. But that's what I thought 10 years ago, and it's not really got much better, except now there's so much data it times out more often then not unless you are lucky with your query optimization.
Comments
Wikidata modelling is a complete disaster: basically nothing has a solid, documented and maintained model, and no one appears to be working on it very much compared to the amount of poorly-modelled data being poured in.
I'm surprised anyone gets anything of use out of Wikidata. Which is an enormous pity, because it's got incredible potential. But that's what I thought 10 years ago, and it's not really got much better, except now there's so much data it times out more often then not unless you are lucky with your query optimization.