Name the venue in which Milos published the paper about Factory tours.
Kravcik published the paper on Factory tours in which venue?
SELECT DISTINCT ?answer WHERE { <https://dblp.org/rec/conf/ectel/KaibelAK06> <https://dblp.org/rdf/schema#authoredBy> <https://dblp.org/pid/27/379> . <https://dblp.org/rec/conf/ectel/KaibelAK06> <https://dblp.org/rdf/schema#publishedIn> ?answer }
<https://dblp.org/pid/27/379> <https://dblp.org/rec/conf/ectel/KaibelAK06>