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
tournament
was
held
from
1
November
through
7
November
1970
.
The:O
tournament:O
was:O
held:O
from:O
1:O
November:O
through:O
7:O
November:O
1970:O
.:O