With no explanation, label each line with "O", "event-election", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Senator
John
Kerry
in
the
2004
U.S.
presidential
election
.
Senator:O
John:person-politician
Kerry:person-politician
in:O
the:O
2004:event-election
U.S.:event-election
presidential:event-election
election:event-election
.:O