With no explanation, label each line with "location-GPE", "O", "organization-sportsleague", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Spring
Football
League
(
SFL
)
was
a
professional
American
football
league
that
existed
for
only
one
season
in
2000
.
The:O
Spring:organization-sportsleague
Football:organization-sportsleague
League:organization-sportsleague
(:O
SFL:organization-sportsleague
):O
was:O
a:O
professional:O
American:location-GPE
football:O
league:O
that:O
existed:O
for:O
only:O
one:O
season:O
in:O
2000:O
.:O