With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
A
Driving
Van
Trailer
or
DVT
is
a
more
modern
type
of
control
car
,
purpose-built
to
include
space
for
baggage
and
a
guard
's
office
.
A:O
Driving:product-train
Van:product-train
Trailer:product-train
or:O
DVT:product-train
is:O
a:O
more:O
modern:O
type:O
of:O
control:O
car:O
,:O
purpose-built:O
to:O
include:O
space:O
for:O
baggage:O
and:O
a:O
guard:O
's:O
office:O
.:O