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 ":".
A
yard
existed
opposite
the
station
.
A:O
yard:O
existed:O
opposite:O
the:O
station:O
.:O