With no explanation, label each line with "O", "product-weapon", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
By
the
end
of
6
December
the
Australians
besieged
and
took
Bardia
along
with
40,000
more
prisoners
and
400
guns
.
By:O
the:O
end:O
of:O
6:O
December:O
the:O
Australians:O
besieged:O
and:O
took:O
Bardia:person-other
along:O
with:O
40,000:O
more:O
prisoners:O
and:O
400:O
guns:product-weapon
.:O