With no explanation, label each line with "O", "organization-company", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
British
Rail
Class
47
is
a
class
of
British
railway
diesel-electric
locomotive
that
was
developed
in
the
1960s
by
Brush
Traction
.
The:O
British:product-train
Rail:product-train
Class:product-train
47:product-train
is:O
a:O
class:O
of:O
British:O
railway:O
diesel-electric:O
locomotive:O
that:O
was:O
developed:O
in:O
the:O
1960s:O
by:O
Brush:organization-company
Traction:organization-company
.:O