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 ":".
While
hard
to
execute
(
at
least
in
place
)
a
decorated
ceiling
has
the
advantage
that
it
is
largely
protected
from
damage
by
fingers
and
dust
.
While:O
hard:O
to:O
execute:O
(:O
at:O
least:O
in:O
place:O
):O
a:O
decorated:O
ceiling:O
has:O
the:O
advantage:O
that:O
it:O
is:O
largely:O
protected:O
from:O
damage:O
by:O
fingers:O
and:O
dust:O
.:O