With no explanation, label each line with "location-GPE", "O", "location-other", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Electrostars
are
most
common
on
the
high-volume
suburban
commuter
routes
in
North
,
South
and
East
London
,
and
mainline
services
south
of
London
to
the
Surrey
,
Sussex
,
Kent
&
amp
;
South
Essex
coasts
and
north
to
Cambridge
and
Stansted
Airport
.
Electrostars:product-train
are:O
most:O
common:O
on:O
the:O
high-volume:O
suburban:O
commuter:O
routes:O
in:O
North:O
,:O
South:O
and:O
East:O
London:location-GPE
,:O
and:O
mainline:O
services:O
south:O
of:O
London:location-GPE
to:O
the:O
Surrey:location-GPE
,:O
Sussex:location-GPE
,:O
Kent:location-GPE
&:O
amp:O
;:O
South:location-GPE
Essex:location-GPE
coasts:O
and:O
north:O
to:O
Cambridge:location-GPE
and:O
Stansted:location-other
Airport:location-other
.:O