With no explanation, label each line with "product-other", "O", "product-weapon", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Like
all
firearms
with
the
Vepr
designation
,
the
Vepr-12
receiver
is
patterned
after
that
of
the
RPK
light
machine
gun
.
Like:O
all:O
firearms:O
with:O
the:O
Vepr:O
designation:O
,:O
the:O
Vepr-12:product-other
receiver:product-other
is:O
patterned:O
after:O
that:O
of:O
the:O
RPK:product-weapon
light:product-weapon
machine:product-weapon
gun:product-weapon
.:O