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 ":".
An
EMD
GP50
is
a
4-axle
road
switcher
diesel-electric
locomotive
built
by
General
Motors
Electro-Motive
Division
(
EMD
)
.
An:O
EMD:product-train
GP50:product-train
is:O
a:O
4-axle:O
road:O
switcher:O
diesel-electric:O
locomotive:O
built:O
by:O
General:organization-company
Motors:organization-company
Electro-Motive:organization-company
Division:organization-company
(:O
EMD:organization-company
):O
.:O