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
addition
,
the
Polaris
series
consisted
of
the
successively-improved
Polaris
A-1
,
Polaris
A-2
,
and
Polaris
A-3
missiles
.
In:O
addition:O
,:O
the:O
Polaris:O
series:O
consisted:O
of:O
the:O
successively-improved:O
Polaris:product-weapon
A-1:product-weapon
,:O
Polaris:product-weapon
A-2:product-weapon
,:O
and:O
Polaris:product-weapon
A-3:product-weapon
missiles:O
.:O