With no explanation, label each line with "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport", "building-hospital" or "building-hotel" preceded by ":".
He
was
reelected
in
2000
and
retired
in
2004
.
He:O
was:O
reelected:O
in:O
2000:O
and:O
retired:O
in:O
2004:O
.:O