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 ":".
A
preview
version
was
shown
in
2004
,
but
it
was
never
released
.
A:O
preview:O
version:O
was:O
shown:O
in:O
2004:O
,:O
but:O
it:O
was:O
never:O
released:O
.:O