With no explanation, label each line with "location-GPE", "building-other", "O", "location-road/railway/highway/transit", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
Class
171s
are
maintained
at
Southern
's
depot
in
Selhurst
,
some
distance
away
from
the
line
.
The:O
Class:location-road/railway/highway/transit
171s:location-road/railway/highway/transit
are:O
maintained:O
at:O
Southern:building-other
's:building-other
depot:building-other
in:O
Selhurst:location-GPE
,:O
some:O
distance:O
away:O
from:O
the:O
line:O
.:O