Five Simple Steps to Start Exploiting a Semantic Web of Linked Data — Using OpenLink Virtuoso

Five Simple Steps to Start Exploiting a Semantic Web of Linked Data — Using OpenLink Virtuoso  

Here are five simple steps that will unveil the virtues of a Semantic Web of Linked Data, using Virtuoso:

1. Download the Virtuoso installer package for Linux, Windows, or macOS.
2. Run the installer program.
3. Install the Linked Data Middleware (“Sponger”) Module via its VAD package, and enable the HTML Cartridge.
4. Install the Facted Browser Package.
5. Execute a SPARQL Query that includes a FROM clause that identifies the HTML document of your choosing.

Query Template

SELECT DISTINCT *
   FROM <{some-web-page-url}> 
   WHERE { ?Entity  a  ?EntityType } 
   LIMIT 50

For example:

SELECT DISTINCT *
   FROM <https://medium.com/p/45cec643fb13/> 
   WHERE { ?Entity  a  ?EntityType } 
   LIMIT 50

If you prefer, you can leave out the explicit FROM clause, and simply put the HTML document URL into the Default Graph URI input field, as depicted below:

Reduce Five Steps to One 

Naturally, you can achieve all this in a single step by taking advantage of the live Virtuoso 8.0 instance behind our URIBurner Service. Here, you simply run the query, and follow-your-nose to a world of serendipitous discovery. 

1. Go to http://linkeddata.uriburner.com/sparql.