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
construction
,
which
was
undertaken
by
a
consortium
known
as
National
Nuclear
Corporation
(
NNC
)
,
began
in
1979
and
the
station
opened
in
1988
.
The:O
construction:O
,:O
which:O
was:O
undertaken:O
by:O
a:O
consortium:O
known:O
as:O
National:organization-company
Nuclear:organization-company
Corporation:organization-company
(:O
NNC:organization-company
):O
,:O
began:O
in:O
1979:O
and:O
the:O
station:O
opened:O
in:O
1988:O
.:O