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 ":".
Who
Killed
Atlanta
's
Children
?
Who:O
Killed:O
Atlanta:O
's:O
Children:O
?:O