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
main
cannon
is
a
M68A1
105
mm
cannon
,
which
can
fire
ammunition
such
as
Armour-piercing
fin-stabilized
discarding-sabot
(
APFSDS
)
Round
.
The:O
main:O
cannon:O
is:O
a:O
M68A1:product-weapon
105:product-weapon
mm:product-weapon
cannon:O
,:O
which:O
can:O
fire:O
ammunition:O
such:O
as:O
Armour-piercing:product-weapon
fin-stabilized:product-weapon
discarding-sabot:product-weapon
(:product-weapon
APFSDS:product-weapon
):product-weapon
Round:product-weapon
.:O