With no explanation, label each line with "product-car", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
This
variant
has
been
de-tuned
for
the
Audi
R8
V10
.
This:O
variant:O
has:O
been:O
de-tuned:O
for:O
the:O
Audi:product-car
R8:product-car
V10:product-car
.:O