With no explanation, label each line with "O", "location-road/railway/highway/transit", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
railway
is
operated
by
the
MTR
Corporation
and
has
two
routes
:
the
Airport
Express
and
the
Tung
Chung
Line
which
provides
a
commuter
service
linking
the
new
town
of
Tung
Chung
to
the
city
.
The:O
railway:O
is:O
operated:O
by:O
the:O
MTR:organization-company
Corporation:organization-company
and:O
has:O
two:O
routes:O
::O
the:O
Airport:location-road/railway/highway/transit
Express:location-road/railway/highway/transit
and:O
the:O
Tung:location-road/railway/highway/transit
Chung:location-road/railway/highway/transit
Line:location-road/railway/highway/transit
which:O
provides:O
a:O
commuter:O
service:O
linking:O
the:O
new:O
town:O
of:O
Tung:location-road/railway/highway/transit
Chung:location-road/railway/highway/transit
to:O
the:O
city:O
.:O