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 ":".
271
or
P.
Oxy
.
271:O
or:O
P.:O
Oxy:O
.:O