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 ":".
Also
the
Yugoslav
Railways
bought
used
units
,
and
designated
them
JŽ
734
;
they
were
subsequently
designated
Series
2133
by
the
Croatian
Railways
.
Also:O
the:O
Yugoslav:organization-company
Railways:organization-company
bought:O
used:O
units:O
,:O
and:O
designated:O
them:O
JŽ:product-train
734:product-train
;:O
they:O
were:O
subsequently:O
designated:O
Series:product-train
2133:product-train
by:O
the:O
Croatian:organization-company
Railways:organization-company
.:O