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
train
was
retired
in
1998
and
its
powercars
and
cars
were
placed
on
exhibition
at
various
sites
.
The:O
train:O
was:O
retired:O
in:O
1998:O
and:O
its:O
powercars:O
and:O
cars:O
were:O
placed:O
on:O
exhibition:O
at:O
various:O
sites:O
.:O