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 ":".
The
first
official
trailer
was
released
on
2
August
2012
.
The:O
first:O
official:O
trailer:O
was:O
released:O
on:O
2:O
August:O
2012:O
.:O