With no explanation, label each line with "O", "organization-sportsleague", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
While
still
an
NWA
member
in
1979
,
they
changed
their
name
from
World
Wide
Wrestling
Federation
(
WWWF
)
to
World
Wrestling
Federation
(
WWF
)
.
While:O
still:O
an:O
NWA:organization-sportsleague
member:O
in:O
1979:O
,:O
they:O
changed:O
their:O
name:O
from:O
World:organization-sportsleague
Wide:organization-sportsleague
Wrestling:organization-sportsleague
Federation:organization-sportsleague
(:O
WWWF:organization-sportsleague
):O
to:O
World:organization-sportsleague
Wrestling:organization-sportsleague
Federation:organization-sportsleague
(:O
WWF:O
):O
.:O