With no explanation, label each line with "O", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
A
unique
experiment
has
been
to
convert
a
GWR
5101
Class
2-6-2T
into
a
small
2-6-0
numbered
9351
.
A:O
unique:O
experiment:O
has:O
been:O
to:O
convert:O
a:O
GWR:product-train
5101:product-train
Class:product-train
2-6-2T:product-train
into:O
a:O
small:O
2-6-0:product-train
numbered:product-train
9351:product-train
.:O