prefix :       <http://example.org/>
prefix xsd:    <http://www.w3.org/2001/XMLSchema#>
prefix schema: <http://schema.org/>

:a  :name    "Title A" ;
    :related :b  .

:b  :related :a ;
    :name    "Title B".

:c  :name  "Title C1", "Title C2" .

:d  :name  234 .

:e  :namme  "Title E" .

:f  :name    "Title F" ;
    :related :a, _:1 .

_:1 :name  "Unknown title" .
