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 ":".
But
,
it
was
n't
to
be
.
But:O
,:O
it:O
was:O
n't:O
to:O
be:O
.:O