With no explanation, label each line with "O", "building-theater", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Burgtheater
was
opened
in
1741
and
has
become
known
as
``
die
Burg
''
by
the
Viennese
population
;
its
theater
company
has
created
a
traditional
style
and
speech
typical
of
Burgtheater
performances
.
The:O
Burgtheater:building-theater
was:O
opened:O
in:O
1741:O
and:O
has:O
become:O
known:O
as:O
``:O
die:O
Burg:O
'':O
by:O
the:O
Viennese:person-other
population:person-other
;:O
its:O
theater:O
company:O
has:O
created:O
a:O
traditional:O
style:O
and:O
speech:O
typical:O
of:O
Burgtheater:building-theater
performances:O
.:O