With no explanation, label each line with "O", "product-software", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
has
been
a
recurring
problem
with
the
DirectX
9
model
,
where
different
video
cards
have
produced
different
results
,
thus
requiring
fixes
keyed
to
specific
cards
to
be
produced
by
developers
.
This:O
has:O
been:O
a:O
recurring:O
problem:O
with:O
the:O
DirectX:product-software
9:product-software
model:O
,:O
where:O
different:O
video:O
cards:O
have:O
produced:O
different:O
results:O
,:O
thus:O
requiring:O
fixes:O
keyed:O
to:O
specific:O
cards:O
to:O
be:O
produced:O
by:O
developers:O
.:O