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
last
was
withdrawn
in
1973
.
The:O
last:O
was:O
withdrawn:O
in:O
1973:O
.:O