# filename: ex421.ttl

@prefix ab:   <http://learningsparql.com/ns/addressbook#> .
@prefix d:    <http://learningsparql.com/ns/data#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

ab:Musician rdf:type rdfs:Class . # could have said a instead of rdf:type

d:i8301 rdf:type ab:Musician ;
        ab:firstName "Craig" ;
        ab:lastName  "Ellis" . 

ab:Person a rdfs:Class .          # could have said rdf:type instead of a
ab:Musician rdfs:subClassOf ab:Person .