With no explanation, label each line with "location-GPE", "product-car", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
Duett
was
the
only
automobile
marketed
by
Volvo
in
the
United
States
that
used
a
separate
frame
.
The:O
Duett:product-car
was:O
the:O
only:O
automobile:O
marketed:O
by:O
Volvo:organization-company
in:O
the:O
United:location-GPE
States:location-GPE
that:O
used:O
a:O
separate:O
frame:O
.:O