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
is
also
sometimes
used
in
books
and
pamphlets
.
It:O
is:O
also:O
sometimes:O
used:O
in:O
books:O
and:O
pamphlets:O
.:O