With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
As
part
of
the
timetable
changes
on
14
December
2008
,
East
Midlands
Trains
reverted
the
service
to
its
post-1968
historic
route
,
and
it
now
operates
from
Sheffield
to
London
St
Pancras
,
via
Chesterfield
,
Derby
and
Leicester
,
not
starting
from
Leeds
.
As:O
part:O
of:O
the:O
timetable:O
changes:O
on:O
14:O
December:O
2008:O
,:O
East:organization-company
Midlands:organization-company
Trains:organization-company
reverted:O
the:O
service:O
to:O
its:O
post-1968:O
historic:O
route:O
,:O
and:O
it:O
now:O
operates:O
from:O
Sheffield:location-GPE
to:O
London:location-GPE
St:location-GPE
Pancras:location-GPE
,:O
via:O
Chesterfield:location-GPE
,:O
Derby:location-GPE
and:O
Leicester:location-GPE
,:O
not:O
starting:O
from:O
Leeds:O
.:O