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 ":".
WNSA
never
recovered
and
eventually
WGR
took
the
upper
hand
in
the
local
sports
radio
battle
.
WNSA:organization-company
never:O
recovered:O
and:O
eventually:O
WGR:organization-company
took:O
the:O
upper:O
hand:O
in:O
the:O
local:O
sports:O
radio:O
battle:O
.:O