prefix :       <http://example.org/>
prefix schema: <http://schema.org/>
prefix rdfs:   <http://www.w3.org/2000/01/rdf-schema#>
prefix foaf:   <http://xmlns.com/foaf/0.1/>

:dave  a :User ;                        #Fails as a :UserShape
       schema:name       "Dave";
       schema:gender     :Unknown ;
       schema:birthDate  1980 ;
       schema:knows      :grace .

:emily a :User ;                        #Fails as a :UserShape
       schema:name       "Emily", "Emilee";
       schema:gender     schema:Female .

:frank a :User ;                        #Fails as a :UserShape
       foaf:name         "Frank" ;
       schema:gender     schema:Male .

_:x    a :User;                         #Fails as a :UserShape
       schema:name       "Unknown" ;
       schema:gender     schema:Male ;
       schema:knows      _:x .
