select ?dd, ?date, ?x, ?val, ?mb 
 from 
 file:rdf/000068.rdf 
 where
 (dc::madeup ?x ?dd) 
 (dc::date ?x ?date) 
 (foaf::location ?x ?z) 
 (rdf::value ?l ?val) 
 (foaf::depiction ?per ?x) 
 (foaf::mbox ?per ?mb) 
 using dc for http://purl.org/dc/elements/1.1/ 
 foaf for http://xmlns.com/foaf/0.1/ 
 rdf for http://www.w3.org/1999/02/22-rdf-syntax-ns#