With no explanation, label each line with "O", "product-weapon", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
January
1944
,
the
21st
Army
Group
decided
that
only
20
mm
Polsten
guns
would
be
used
as
a
standard
light
gun
to
simplify
supply
.
In:O
January:O
1944:O
,:O
the:O
21st:organization-other
Army:organization-other
Group:organization-other
decided:O
that:O
only:O
20:O
mm:O
Polsten:product-weapon
guns:O
would:O
be:O
used:O
as:O
a:O
standard:O
light:O
gun:O
to:O
simplify:O
supply:O
.:O