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
basic
allocation
consists
of
Class
142
Class
156
and
British
Rail
Class
158
diesel
multiple
units
operated
by
Northern
.
The:O
basic:O
allocation:O
consists:O
of:O
Class:product-train
142:product-train
Class:product-train
156:product-train
and:O
British:product-train
Rail:product-train
Class:product-train
158:product-train
diesel:O
multiple:O
units:O
operated:O
by:O
Northern:organization-company
.:O