With no explanation, label each line with "location-GPE", "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Later
other
types
of
Soviet
-designed
military
equipment
were
also
introduced
:
57
mm
AZP
S-60
and
ZU-23-2
AA
guns
,
2M-3M
naval
cannons
,
armament
for
the
2S1
Gvozdika
SP
howitzer
,
DShK
,
NSV
and
KPV
heavy
machine
guns
,
as
well
as
domestic
designs
.
Later:O
other:O
types:O
of:O
Soviet:location-GPE
-designed:O
military:O
equipment:O
were:O
also:O
introduced:O
::O
57:O
mm:O
AZP:product-weapon
S-60:product-weapon
and:O
ZU-23-2:product-weapon
AA:product-weapon
guns:product-weapon
,:O
2M-3M:product-weapon
naval:O
cannons:O
,:O
armament:O
for:O
the:O
2S1:product-weapon
Gvozdika:product-weapon
SP:product-weapon
howitzer:O
,:O
DShK:product-weapon
,:O
NSV:product-weapon
and:O
KPV:product-weapon
heavy:O
machine:O
guns:O
,:O
as:O
well:O
as:O
domestic:O
designs:O
.:O