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
Heckler
&
amp
;
Koch
G11
Assault
rifle
uses
caseless
ammunition
,
but
has
a
``
rotating
''
breech
,
not
a
floating
breech
.
The:O
Heckler:product-weapon
&:product-weapon
amp:product-weapon
;:product-weapon
Koch:product-weapon
G11:product-weapon
Assault:product-weapon
rifle:O
uses:O
caseless:O
ammunition:O
,:O
but:O
has:O
a:O
``:O
rotating:O
'':O
breech:O
,:O
not:O
a:O
floating:O
breech:O
.:O