With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
These
rights
were
assigned
to
CSX
Transportation
in
the
1999
breakup
of
Conrail
.
These:O
rights:O
were:O
assigned:O
to:O
CSX:organization-company
Transportation:organization-company
in:O
the:O
1999:O
breakup:O
of:O
Conrail:organization-company
.:O