With no explanation, label each line with "location-GPE", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
A
number
of
SEPTA
bus
routes
also
serve
South
Philadelphia
,
ferrying
commuters
to
and
from
Center
City
and
its
immediate
suburbs
,
mostly
those
in
Delaware
County
.
A:O
number:O
of:O
SEPTA:organization-other
bus:O
routes:O
also:O
serve:O
South:location-GPE
Philadelphia:location-GPE
,:O
ferrying:O
commuters:O
to:O
and:O
from:O
Center:O
City:O
and:O
its:O
immediate:O
suburbs:O
,:O
mostly:O
those:O
in:O
Delaware:location-GPE
County:location-GPE
.:O