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 ":".
This
brought
an
end
to
40
years
of
Class
86
-hauled
passenger
trains
.
This:O
brought:O
an:O
end:O
to:O
40:O
years:O
of:O
Class:product-train
86:product-train
-hauled:O
passenger:O
trains:O
.:O