With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
system
extended
from
Thatta
in
the
south
,
through
Kotri
and
Hyderabad
and
as
far
north
as
Sukkur
.
The:O
system:O
extended:O
from:O
Thatta:location-GPE
in:O
the:O
south:O
,:O
through:O
Kotri:location-GPE
and:O
Hyderabad:location-GPE
and:O
as:O
far:O
north:O
as:O
Sukkur:location-GPE
.:O