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 ":".
May
be
found
down
to
78
m
depth
.
May:O
be:O
found:O
down:O
to:O
78:O
m:O
depth:O
.:O