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 ":".
It
was
released
on
April
16
,
2007
.
It:O
was:O
released:O
on:O
April:O
16:O
,:O
2007:O
.:O