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 ":".
Initially
the
company
license-built
M1939
37
mm
automatic
air
defense
guns
and
Nudelman
N-37
aircraft
cannons
used
in
LiM-2
and
MiG-17
fighters
.
Initially:O
the:O
company:O
license-built:O
M1939:product-weapon
37:O
mm:O
automatic:O
air:O
defense:O
guns:O
and:O
Nudelman:product-weapon
N-37:product-weapon
aircraft:O
cannons:O
used:O
in:O
LiM-2:product-weapon
and:O
MiG-17:product-weapon
fighters:O
.:O