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
U.S
.
also
adopted
the
M60
GPMG
.
The:O
U.S:location-GPE
.:location-GPE
also:O
adopted:O
the:O
M60:product-weapon
GPMG:product-weapon
.:O