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 ":".
Trains
in
Ireland
are
primarily
operated
as
standard-class
only
,
with
only
some
of
the
longest
distance
services
having
a
higher
class
,
called
Premier
on
IE
22000
Class
stock
,
CityGold
on
Mark
4
loco-hauled
carriages
and
First
Plus
on
the
cross-border
Enterprise
service
.
Trains:O
in:O
Ireland:O
are:O
primarily:O
operated:O
as:O
standard-class:O
only:O
,:O
with:O
only:O
some:O
of:O
the:O
longest:O
distance:O
services:O
having:O
a:O
higher:O
class:O
,:O
called:O
Premier:O
on:O
IE:O
22000:O
Class:O
stock:O
,:O
CityGold:O
on:O
Mark:O
4:O
loco-hauled:O
carriages:O
and:O
First:O
Plus:O
on:O
the:O
cross-border:O
Enterprise:O
service:O
.:O