With no explanation, label each line with "product-airplane", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
immediately
preceding
Saab
production
code
was
for
an
aeroplane
-
the
Saab
91
Safir
.
The:O
immediately:O
preceding:O
Saab:organization-company
production:O
code:O
was:O
for:O
an:O
aeroplane:O
-:O
the:O
Saab:product-airplane
91:product-airplane
Safir:product-airplane
.:O