Every resource is available as RDF. To request the content as Linked Data you have to set the appropiate Accept
header.
For Turtle:
curl -u jakob1:***** -H "Accept: text/turtle" https://envirocar.org/api/stable/users/jakob1
@base <https://envirocar.org/api/stable/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix vcard: <http://www.w3.org/2001/vcard-rdf/3.0#> .
@prefix dcterms: <http://purl.org/dc/elements/1.1/> .
<users/jakob2> a foaf:Person .
<users/Turbomartin> a foaf:Person .
<users/ChristianK> a foaf:Person .
<users/OraibMiq> a foaf:Person .
<users/AlbertRemke> a foaf:Person .
<users/dnnsdnns> a foaf:Person .
<groups/Product%20Owner>
a foaf:Group ;
foaf:member <users/jakob1> .
<users/jakob1> a foaf:Person ;
dcterms:rights "http://opendatacommons.org/licenses/odbl/" ;
vcard:EMAIL "jakob@jakob.de" ;
vcard:NICKNAME "jakob1" ;
foaf:img <users/jakob1/avatar> ;
foaf:knows <users/AlbertRemke> ,
<users/ChristianK> ,
<users/dnnsdnns> ,
<users/OraibMiq> ,
<users/Turbomartin> ,
<users/jakob2> ;
foaf:mbox "mailto:jakob@jakob.de"^^xsd:string ;
foaf:nick "jakob1"^^xsd:string .
For RDF/XML:
curl -u jakob1:***** -H "Accept: application/rdf+xml" https://envirocar.org/api/stable/users/jakob1
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:foaf="http://xmlns.com/foaf/0.1/"
xmlns:vcard="http://www.w3.org/2001/vcard-rdf/3.0#"
xmlns:dcterms="http://purl.org/dc/elements/1.1/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
<foaf:Person rdf:about="">
<foaf:knows>
<foaf:Person rdf:about="AlbertRemke"/>
</foaf:knows>
<vcard:EMAIL>jakob@jakob.de</vcard:EMAIL>
<dcterms:rights>http://opendatacommons.org/licenses/odbl/</dcterms:rights>
<foaf:knows>
<foaf:Person rdf:about="ChristianK"/>
</foaf:knows>
<foaf:knows>
<foaf:Person rdf:about="dnnsdnns"/>
</foaf:knows>
<foaf:knows>
<foaf:Person rdf:about="OraibMiq"/>
</foaf:knows>
<foaf:nick rdf:datatype="http://www.w3.org/2001/XMLSchema#string">jakob1</foaf:nick>
<foaf:mbox rdf:datatype="http://www.w3.org/2001/XMLSchema#string">mailto:jakob@jakob.de</foaf:mbox>
<foaf:knows>
<foaf:Person rdf:about="Turbomartin"/>
</foaf:knows>
<foaf:img rdf:resource="jakob1/avatar"/>
<foaf:knows>
<foaf:Person rdf:about="jakob2"/>
</foaf:knows>
<vcard:NICKNAME>jakob1</vcard:NICKNAME>
</foaf:Person>
<foaf:Group rdf:about="../groups/Product%20Owner">
<foaf:member rdf:resource=""/>
</foaf:Group>
</rdf:RDF>