With no explanation, label each line with "O", "organization-sportsleague", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
2010
Pro
Bowl
was
the
National
Football
League
's
all-star
game
for
the
2009
season
.
The:O
2010:event-sportsevent
Pro:event-sportsevent
Bowl:event-sportsevent
was:O
the:O
National:organization-sportsleague
Football:organization-sportsleague
League:organization-sportsleague
's:O
all-star:O
game:O
for:O
the:O
2009:O
season:O
.:O