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 ":".
However
,
post-2006
,
there
were
no
Linebacker
units
left
in
service
,
as
all
vehicles
had
been
converted
back
to
the
Bradley
ODS
standard
.
However:O
,:O
post-2006:O
,:O
there:O
were:O
no:O
Linebacker:product-weapon
units:O
left:O
in:O
service:O
,:O
as:O
all:O
vehicles:O
had:O
been:O
converted:O
back:O
to:O
the:O
Bradley:product-weapon
ODS:product-weapon
standard:O
.:O