With no explanation, label each line with "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Some
were
up-gunned
with
a
20
mm
ShVAK
cannon
,
and
designated
the
T-38RT
.
Some:O
were:O
up-gunned:O
with:O
a:O
20:product-weapon
mm:product-weapon
ShVAK:product-weapon
cannon:product-weapon
,:O
and:O
designated:O
the:O
T-38RT:product-weapon
.:O