Ballhausplatz
Ballhausplatz is a square in central Vienna containing the building ( with the address Ballhausplatz 2 ) that for over two hundred years has been the official residence of the most senior Austrian Cabinet Minister , the State Chancellor , today the Chancellor of Austria ( Prime Minister ) . 
<triplet> Ballhausplatz <subj> square <obj> instance of <triplet> Vienna <subj> Austria <obj> located in the administrative territorial entity <triplet> Ballhausplatz <subj> square <obj> instance of <triplet> Austria <subj> Vienna <obj> contains administrative territorial entity <subj> Chancellor of Austria <obj> office held by head of government <triplet> Chancellor of Austria <subj> Austria <obj> country