Kingsley,

The mappings are already in Wikidata (we still have a few properties left
to map, but the classes are done, except for a few in pending.schema.org.
You can just query them in some fashion such as this:
http://tinyurl.com/h9vjqd8



On Sun, Oct 9, 2016 at 11:09 AM Kingsley Idehen <kide...@openlinksw.com>
wrote:

> On 10/8/16 5:04 PM, Thad Guidry wrote:
>
> Class mappings are almost complete Kingsley. We were trying to get
> Wikidata to the point where it is easy for folks to do trivial queries
> right inside WDQS as part of WD Goals for 2016.
>
>
> Thad,
>
> Here is a post (brought up to date in last day) that demonstrates
> owl:equivalentClass reasoning and inference. Once I have a link to the new
> mappings I will integrate into this demo.
>
> Note, this particular LOD Cloud Cache instance has 30 Billion+ triples
> against which the owl:equivalentClass inference is being applied, at query
> evaluation time.
>
> [1]
> http://kidehen.blogspot.com/2014/02/class-equivalence-based-reasoning.html
>
>
> Kingsley
>
>
> On Sat, Oct 8, 2016, 2:38 PM Kingsley Idehen <kide...@openlinksw.com>
> wrote:
>
> On 10/6/16 2:57 PM, Thad Guidry wrote:
>
> Hello team :)
>
> So while I'm helping with the Wikidata - Schema.org mappings, a request
> came in to expose subcategories of an existing Wikipedia category.
>
> For example, say I start with this topic:
> https://www.wikidata.org/wiki/Q27119725  Parking facilities
>
> The topic's main category is shown as "Category:Parking facilities" and
> that has links to Wikipedia, specifically a Wikipedia category link, and
> where the WP category page has subcategories that I would like to expose
> somehow in whichever way is *easiest* currently with our tools, apis, etc.
>
> Can it all be done in SPARQL against some services that already expose WP
> subcategories given a specific category ?  Or is there an API that does
> this already ?  other tools that might expose WP categories ?
>
> The IDEAL GOAL is to query 'equivalent class' = schema.org/ParkingFacility
> and get back the WP categories *in one shot or query or api call.*
>
> http://schema.org/ParkingFacility
>
>    -
>    Parking facilities in India
>    <https://en.wikipedia.org/wiki/Category:Parking_facilities_in_India>‎
>    - Parking facilities in the United States
>    
> <https://en.wikipedia.org/wiki/Category:Parking_facilities_in_the_United_States>
>    ‎
>
>
>    - Aircraft hangars
>    <https://en.wikipedia.org/wiki/Category:Aircraft_hangars>‎
>
>
>    - Garages (parking)
>    <https://en.wikipedia.org/wiki/Category:Garages_%28parking%29>‎
>    - Railway depots
>    <https://en.wikipedia.org/wiki/Category:Railway_depots>‎
>
>
> Any gurus ?
>
>
> Hi Thad,
>
> If there are owl:equivalentClass mappings in some Linked Data Space, and
> the SPARQL service associated with said Data Space supports
> owl:equivalentClass reasoning, then the answer to your question is yes.
> What unknown right now is the class mappings between Wikidata and
> Schema.org. If a dump of those exist, the rest is trivial :)
>
> --
> Regards,
>
> Kingsley Idehen       
> Founder & CEO
> OpenLink Software   (Home Page: http://www.openlinksw.com)
>
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> --
> Regards,
>
> Kingsley Idehen       
> Founder & CEO
> OpenLink Software   (Home Page: http://www.openlinksw.com)
>
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