With no explanation, label each line with "O", "event-election", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
2004
presidential
election
were
carried
out
on
4
January
2004
.
The:O
2004:event-election
presidential:event-election
election:event-election
were:O
carried:O
out:O
on:O
4:O
January:O
2004:O
.:O