# filename: ex417.ttl

@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix dm:   <http://learningsparql.com/ns/demo#> .
@prefix d:    <http://learningsparql.com/ns/data#> .
@prefix dc:   <http://purl.org/dc/elements/1.1/> . 
@prefix nfo:  <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#> . 

dm:composer rdfs:subPropertyOf dc:creator . 
dm:photographer rdfs:subPropertyOf dc:creator . 

d:file02924 nfo:fileName "9894397.mp3" ;
            dm:composer "Charles Ives" . 

d:file74395 nfo:fileName "884930.mp3" ;
            dm:composer "Eric Satie" . 

d:file69383 nfo:fileName "119933.mp3" ;
            dm:photographer "Diane Arbus" . 

d:file54839 nfo:fileName "204364.mp3" ;
            dm:photographer "Henry Fox Talbot" .