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 ":".
It
has
not
been
used
since
,
except
It:O
has:O
not:O
been:O
used:O
since:O
,:O
except:O