With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
The
second
disc
was
sold
in
a
special
fold-out
collector
's
case
with
a
place
holder
for
the
first
disc
,
which
was
sold
separately
.
The:O
second:O
disc:O
was:O
sold:O
in:O
a:O
special:O
fold-out:O
collector:O
's:O
case:O
with:O
a:O
place:O
holder:O
for:O
the:O
first:O
disc:O
,:O
which:O
was:O
sold:O
separately:O
.:O