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 ":".
To
this
maybe
we
can
add
art
.
To:O
this:O
maybe:O
we:O
can:O
add:O
art:O
.:O