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
competition
consisted
of
a
semi-final
and
a
final
on
24
January
and
21
February
2009
respectively
.
The:O
competition:O
consisted:O
of:O
a:O
semi-final:O
and:O
a:O
final:O
on:O
24:O
January:O
and:O
21:O
February:O
2009:O
respectively:O
.:O