Re: schema.org does not serve RDF?

On Thu, 15 Oct 2020 at 09:00, Melvin Carvalho <melvincarvalho@gmail.com>
wrote:

> On Wed, 14 Oct 2020 at 23:48, Martynas Jusevičius <martynas@atomgraph.com>
> wrote:
>
>> Hi,
>>
>> Our Linked Data client is failing to load term descriptions from
>> schema.org because it looks like RDF representations are not served,
>> or at least the content negotiation does not work and HTML is
>> returned?
>>
>> Example:
>> curl https://schema.org/employee -H "Accept:
>>
>> application/rdf+xml,application/n-triples,application/rdf+thrift,text/turtle,text/rdf+n3,application/rdf+json"
>>
>> Executable example: https://reqbin.com/c-vjs20ras
>
>
> From my experience the content negotiation pattern that you are using is
> quite hard to implement
>
> Another simpler option might be to just put it in JSON-LD in a script tag
> ie a structured data island
>
> That might be the "schema.org" way of doing things ie eating your own
> dogfood, and I think is part of the JSON-LD 1.1 spec, so would play well
> with toolilng
>

We don't use content negotiation to serve up per-page fragments of the RDF
representation of Schema.org. The site is statically served.

You can get the whole thing from https://schema.org/docs/developers.html in
a variety of downloadable formats. We have for some years included a few
RDFa annotations in the HTML of each page, including
https://schema.org/employee but will be migrating these to JSON-LD islands
for maintainability, and for consistency with the ways schema.org markup
itself is most widely used.

The current HTML has: <div id="mainContent" vocab="http://schema.org/"
typeof="rdfs:Property" resource="http://schema.org/employee">

which seems to extract ok,
https://www.w3.org/2012/pyRdfa/extract?uri=https%3A%2F%2Fschema.org%2Femployee&format=nt&rdfagraph=output&vocab_expansion=false&rdfa_lite=false&embedded_rdf=true&space_preserve=true&vocab_cache=true&vocab_cache_report=false&vocab_cache_refresh=false

...however this is fragile and makes it hard to improve the site's UI
without breaking the RDFa. There's a draft of the next release at
https://webschemas.org/employee which has embedded JSON-LD at the end of
the page content.

cheers,

Dan



>
>

>>
>>
>> Martynas
>> atomgraph.com
>>
>>