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 ":".
For
a
time
it
was
common
to
describe
any
of
the
lighter
tank
designs
as
a
Whippet
,
even
the
French
Renault
FT
.
For:O
a:O
time:O
it:O
was:O
common:O
to:O
describe:O
any:O
of:O
the:O
lighter:O
tank:O
designs:O
as:O
a:O
Whippet:product-weapon
,:O
even:O
the:O
French:product-weapon
Renault:product-weapon
FT:product-weapon
.:O