With no explanation, label each line with "O", "product-weapon", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
master
aircraft
designer
Ernst
Heinkel
himself
remarked
in
October
1943
,
while
both
designs
were
still
being
worked
on
,
that
he
thought
that
only
the
Ta
400
could
be
a
worthy
competitor
to
his
firm
's
He
277
,
for
the
Amerika
Bomber
competition
.
The:O
master:O
aircraft:O
designer:O
Ernst:person-other
Heinkel:person-other
himself:O
remarked:O
in:O
October:O
1943:O
,:O
while:O
both:O
designs:O
were:O
still:O
being:O
worked:O
on:O
,:O
that:O
he:O
thought:O
that:O
only:O
the:O
Ta:product-weapon
400:product-weapon
could:O
be:O
a:O
worthy:O
competitor:O
to:O
his:O
firm:O
's:O
He:product-weapon
277:product-weapon
,:O
for:O
the:O
Amerika:O
Bomber:O
competition:O
.:O