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 ":".
On
12
November
2012
a
trailer
was
released
.
On:O
12:O
November:O
2012:O
a:O
trailer:O
was:O
released:O
.:O