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 ":".
The
Great
Northern
Railway
built
and
maintained
ownership
of
the
line
from
1909
until
1970
,
when
the
newly
formed
Burlington
Northern
Railroad
(
BN
)
was
transferred
ownership
of
the
line
during
the
merger
forming
it
.
The:O
Great:organization-company
Northern:organization-company
Railway:organization-company
built:O
and:O
maintained:O
ownership:O
of:O
the:O
line:O
from:O
1909:O
until:O
1970:O
,:O
when:O
the:O
newly:O
formed:O
Burlington:organization-company
Northern:organization-company
Railroad:organization-company
(:organization-company
BN:organization-company
):organization-company
was:O
transferred:O
ownership:O
of:O
the:O
line:O
during:O
the:O
merger:O
forming:O
it:O
.:O