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 ":".
On
the
north-west
coast
,
the
Western
Soccer
Alliance
(
WSA
)
,
a
summer
outdoor
league
,
emerged
in
response
to
the
collapse
of
the
North
American
Soccer
League
.
On:O
the:O
north-west:O
coast:O
,:O
the:O
Western:organization-sportsleague
Soccer:organization-sportsleague
Alliance:organization-sportsleague
(:O
WSA:organization-sportsleague
):O
,:O
a:O
summer:O
outdoor:O
league:O
,:O
emerged:O
in:O
response:O
to:O
the:O
collapse:O
of:O
the:O
North:organization-sportsleague
American:organization-sportsleague
Soccer:organization-sportsleague
League:organization-sportsleague
.:O