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
class
was
intended
for
service
on
rural
and
branch
lines
where
passenger
numbers
do
not
justify
longer
trains
,
or
to
boost
the
capacity
on
trains
with
high
passenger
volume
.
The:O
class:O
was:O
intended:O
for:O
service:O
on:O
rural:O
and:O
branch:O
lines:O
where:O
passenger:O
numbers:O
do:O
not:O
justify:O
longer:O
trains:O
,:O
or:O
to:O
boost:O
the:O
capacity:O
on:O
trains:O
with:O
high:O
passenger:O
volume:O
.:O