With no explanation, label each line with "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
North
County
Transit
District
(
NCTD
)
operates
local
bus
service
,
with
the
Escondido
Transit
Center
serving
as
a
hub
.
The:O
North:location-other
County:location-other
Transit:location-other
District:location-other
(:O
NCTD:location-other
):O
operates:O
local:O
bus:O
service:O
,:O
with:O
the:O
Escondido:location-other
Transit:location-other
Center:location-other
serving:O
as:O
a:O
hub:O
.:O