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 ":".
This
was
confirmed
on
December
8
.
This:O
was:O
confirmed:O
on:O
December:O
8:O
.:O