With no explanation, label each line with "O", "building-theater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
play
has
been
a
``
work
in
progress
''
and
was
greeted
with
high
praise
during
a
1992
production
at
the
Centaur
.
The:O
play:O
has:O
been:O
a:O
``:O
work:O
in:O
progress:O
'':O
and:O
was:O
greeted:O
with:O
high:O
praise:O
during:O
a:O
1992:O
production:O
at:O
the:O
Centaur:building-theater
.:O