DataHub v1 is the original DataHub catalog of 11,000+ open datasets, now migrated to PortalJS Arc.
Dataset

Neel

These are the triples deriving from the subject headings existing at the digital library of thesis and dissertations of the University of Piraeus in Greece. Additionally, the specific service contains links to the New York Times subject headings.

Download & API
2012-01-21T145021/triples8859.n3bin1.2 MB
Triples of the University of Piraeus Digital Library
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SPARQL endpointfile20 B
You can access the graphical user interface of the service in the follow link: http://neel.cs.unipi.gr/entry2/
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SKOS Simple Knowledge Organization System Namespace Document - HTML Variantfile28 KB
The Simple Knowledge Organization System (SKOS) is a common data model for sharing and linking knowledge organization systems via the Semantic Web.
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Sources & license