@prefix foaf: .
@prefix rdf: .
@prefix rdfs: .
@prefix ex: .
_:a foaf:name "Alice" .
_:a foaf:homepage .
_:a foaf:mbox "" .
_:a ex:blurb "My name is Alice
"^^rdf:XMLLiteral .
_:a foaf:knows _:b .
_:b foaf:name "Bob"@en .
_:b foaf:mbox .
_:b foaf:homepage .
_:b ex:ageInYears 30 .
_:b foaf:knows _:a .