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
``
Ferdinand
``
was
optimized
for
destroying
Soviet
T-34
tanks
and
76.2
mm
anti-tank
guns
from
behind
the
front
lines
with
its
88
mm
gun
at
a
range
of
over
3
kilometres
,
a
role
which
it
performed
well
.
The:O
``:O
Ferdinand:product-weapon
``:O
was:O
optimized:O
for:O
destroying:O
Soviet:product-weapon
T-34:product-weapon
tanks:O
and:O
76.2:O
mm:O
anti-tank:O
guns:O
from:O
behind:O
the:O
front:O
lines:O
with:O
its:O
88:O
mm:O
gun:O
at:O
a:O
range:O
of:O
over:O
3:O
kilometres:O
,:O
a:O
role:O
which:O
it:O
performed:O
well:O
.:O