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 ":".
Bids
were
received
from
General
Dynamics
,
Grumman
,
Ling-Temco-Vought
,
McDonnell
Douglas
,
and
North
American
Rockwell
;
four
bids
incorporated
variable-geometry
wings
.
Bids:O
were:O
received:O
from:O
General:organization-company
Dynamics:organization-company
,:O
Grumman:organization-company
,:O
Ling-Temco-Vought:organization-company
,:O
McDonnell:organization-company
Douglas:organization-company
,:O
and:O
North:organization-company
American:organization-company
Rockwell:organization-company
;:O
four:O
bids:O
incorporated:O
variable-geometry:O
wings:O
.:O