PREFIX data:
PREFIX foaf:
PREFIX rdf:
PREFIX rdfs:
SELECT ?mbox ?age ?ppd
WHERE
{
GRAPH data:aliceFoaf
{
?alice foaf:mbox ;
foaf:knows ?whom .
?whom foaf:mbox ?mbox ;
rdfs:seeAlso ?ppd .
?ppd a foaf:PersonalProfileDocument .
} .
GRAPH ?ppd
{
?w foaf:mbox ?mbox . ?w foaf:age ?age
}
}