With no explanation, label each line with "O", "location-road/railway/highway/transit", "building-restaurant", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
extensive
construction
of
the
U
Street
Metro
station
across
the
street
from
the
restaurant
,
completed
in
1991
,
forced
still
more
U
Street
businesses
to
close
,
but
Ben
's
Chili
Bowl
stayed
open
to
feed
the
construction
workers
.
The:O
extensive:O
construction:O
of:O
the:O
U:location-road/railway/highway/transit
Street:location-road/railway/highway/transit
Metro:location-road/railway/highway/transit
station:location-road/railway/highway/transit
across:O
the:O
street:O
from:O
the:O
restaurant:O
,:O
completed:O
in:O
1991:O
,:O
forced:O
still:O
more:O
U:location-road/railway/highway/transit
Street:location-road/railway/highway/transit
businesses:O
to:O
close:O
,:O
but:O
Ben:building-restaurant
's:building-restaurant
Chili:building-restaurant
Bowl:building-restaurant
stayed:O
open:O
to:O
feed:O
the:O
construction:O
workers:O
.:O