With no explanation, label each line with "O", "event-election", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
the
2008
United
States
presidential
election
,
Barber
was
a
frequent
donor
to
the
Barack
Obama
2008
presidential
campaign
.
During:O
the:O
2008:event-election
United:event-election
States:event-election
presidential:event-election
election:event-election
,:O
Barber:person-other
was:O
a:O
frequent:O
donor:O
to:O
the:O
Barack:event-election
Obama:event-election
2008:event-election
presidential:event-election
campaign:event-election
.:O