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
route
and
destination
of
a
specific
train
can
be
determined
by
just
looking
at
the
train
number
.
The:O
route:O
and:O
destination:O
of:O
a:O
specific:O
train:O
can:O
be:O
determined:O
by:O
just:O
looking:O
at:O
the:O
train:O
number:O
.:O