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 ":".
The
league
was
formed
initially
to
provide
a
league
for
teams
not
accepted
by
the
rival
Canadian
Amateur
Hockey
League
(
CAHL
)
.
The:O
league:O
was:O
formed:O
initially:O
to:O
provide:O
a:O
league:O
for:O
teams:O
not:O
accepted:O
by:O
the:O
rival:O
Canadian:organization-sportsleague
Amateur:organization-sportsleague
Hockey:organization-sportsleague
League:organization-sportsleague
(:O
CAHL:organization-sportsleague
):O
.:O