With no explanation, label each line with "location-GPE", "O", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
When
Cerialis
returned
as
governor
of
Britain
ten
years
later
,
he
took
command
of
the
Ninth
once
more
in
a
successful
campaign
against
the
Brigantes
in
71–72
,
to
subdue
north-central
Britain
.
When:O
Cerialis:person-politician
returned:O
as:O
governor:O
of:O
Britain:location-GPE
ten:O
years:O
later:O
,:O
he:O
took:O
command:O
of:O
the:O
Ninth:O
once:O
more:O
in:O
a:O
successful:O
campaign:O
against:O
the:O
Brigantes:O
in:O
71–72:O
,:O
to:O
subdue:O
north-central:O
Britain:location-GPE
.:O