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
project
to
upgrade
this
facility
began
in
August
of
that
year
.
A:O
project:O
to:O
upgrade:O
this:O
facility:O
began:O
in:O
August:O
of:O
that:O
year:O
.:O