With no explanation, label each line with "location-GPE", "O", "organization-politicalparty", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Often
politically
active
,
he
campaigned
in
1958
to
elect
the
Democrat
Edmund
Muskie
as
governor
of
Maine
.
Often:O
politically:O
active:O
,:O
he:O
campaigned:O
in:O
1958:O
to:O
elect:O
the:O
Democrat:organization-politicalparty
Edmund:person-politician
Muskie:person-politician
as:O
governor:O
of:O
Maine:location-GPE
.:O