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 ":".
The
Metro
Silver
Line
stops
at
the
street
level
next
to
the
station
's
entrances
.
The:O
Metro:location-road/railway/highway/transit
Silver:location-road/railway/highway/transit
Line:location-road/railway/highway/transit
stops:O
at:O
the:O
street:O
level:O
next:O
to:O
the:O
station:O
's:O
entrances:O
.:O