With no explanation, label each line with "O", "location-road/railway/highway/transit", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Some
of
the
disused
railway
stations
on
the
``
billy
goat
railway
``
have
now
been
reactivated
.
Some:O
of:O
the:O
disused:O
railway:O
stations:O
on:O
the:O
``:O
billy:location-road/railway/highway/transit
goat:location-road/railway/highway/transit
railway:location-road/railway/highway/transit
``:O
have:O
now:O
been:O
reactivated:O
.:O