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 ":".
From
6
October
2008
,
in-game
billboards
featured
ads
for
the
then
United
States
Democratic
Presidential
Candidate
Barack
Obama
.
From:O
6:O
October:O
2008:O
,:O
in-game:O
billboards:O
featured:O
ads:O
for:O
the:O
then:O
United:location-GPE
States:location-GPE
Democratic:organization-politicalparty
Presidential:O
Candidate:O
Barack:person-politician
Obama:person-politician
.:O