Unique identifier for the SPARQL Results in JSON file format.

'http://www.w3.org/ns/formats/SPARQL_Results_JSON' is the URI. SPARQL Results in JSON is defined by the “SPARQL 1.1 Query Results JSON Format” W3C Recommendation. It has a media type: ‘application/sparql-results+json’ and a preferred suffix: ‘.srj’. (See further details on the Media Registration.)