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 ":".
The
stock
can
be
removed
and
replaced
with
a
receiver
endplate
;
a
rotary
drum
with
apertures
from
the
MP5A2
can
also
be
used
.
The:O
stock:O
can:O
be:O
removed:O
and:O
replaced:O
with:O
a:O
receiver:O
endplate:O
;:O
a:O
rotary:O
drum:O
with:O
apertures:O
from:O
the:O
MP5A2:product-weapon
can:O
also:O
be:O
used:O
.:O