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 ":".
The
tower
rises
20
floors
and
in
height
.
The:O
tower:O
rises:O
20:O
floors:O
and:O
in:O
height:O
.:O