With no explanation, label each line with "location-GPE", "O", "organization-company", "product-train", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
Korail
Class
8000
locomotive
is
a
series
of
South
Korean
electric
locomotives
operated
by
Korail
.
The:O
Korail:product-train
Class:product-train
8000:product-train
locomotive:O
is:O
a:O
series:O
of:O
South:location-GPE
Korean:location-GPE
electric:O
locomotives:O
operated:O
by:O
Korail:organization-company
.:O