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 ":".
It
was
the
fifth
edition
of
the
tournament
and
was
held
from
February
23
through
March
1
,
1981
.
It:O
was:O
the:O
fifth:O
edition:O
of:O
the:O
tournament:O
and:O
was:O
held:O
from:O
February:O
23:O
through:O
March:O
1:O
,:O
1981:O
.:O