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 ":".
Demolition
of
the
building
's
interior
began
on
April
27
,
2006
,
with
final
exterior
demolition
beginning
May
27
,
2006
.
Demolition:O
of:O
the:O
building:O
's:O
interior:O
began:O
on:O
April:O
27:O
,:O
2006:O
,:O
with:O
final:O
exterior:O
demolition:O
beginning:O
May:O
27:O
,:O
2006:O
.:O