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 ":".
In
July
1962
,
operational
testing
ended
with
a
recommendation
for
adoption
of
the
ArmaLite
AR-15
rifle
chambered
in
.223
Remington
.
In:O
July:O
1962:O
,:O
operational:O
testing:O
ended:O
with:O
a:O
recommendation:O
for:O
adoption:O
of:O
the:O
ArmaLite:product-weapon
AR-15:product-weapon
rifle:product-weapon
chambered:O
in:O
.223:product-weapon
Remington:product-weapon
.:O