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 ":".
The
American
M16
rifle
used
the
M7
bayonet
which
is
based
on
earlier
designs
such
as
the
M4
,
M5
and
M6
models
,
all
of
which
are
direct
descendants
of
the
M3
Fighting
Knife
and
have
a
spear-point
blade
with
a
half
sharpened
secondary
edge
.
The:O
American:location-GPE
M16:product-weapon
rifle:O
used:O
the:O
M7:product-weapon
bayonet:O
which:O
is:O
based:O
on:O
earlier:O
designs:O
such:O
as:O
the:O
M4:product-weapon
,:O
M5:product-weapon
and:O
M6:product-weapon
models:O
,:O
all:O
of:O
which:O
are:O
direct:O
descendants:O
of:O
the:O
M3:product-weapon
Fighting:product-weapon
Knife:product-weapon
and:O
have:O
a:O
spear-point:O
blade:O
with:O
a:O
half:O
sharpened:O
secondary:O
edge:O
.:O