Name the venue in which Graf published the paper about Privacy model.
Graf published the paper on Privacy model in which venue?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/dbsec/BiskupG88> <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/74/3205> . <https://dblp.org/rec/conf/dbsec/BiskupG88> <https://dblp.org/rdf/schema#publishedIn> ?answer }
<https://dblp.org/pid/74/3205> <https://dblp.org/rec/conf/dbsec/BiskupG88>