With no explanation, label each line with "O", "person-athlete", "event-sportsevent", "organization-sportsleague", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
After
winning
the
2006
Italian
Grand
Prix
,
Michael
Schumacher
announced
his
retirement
from
Formula
1
racing
at
the
end
of
the
2006
season
.
After:O
winning:O
the:O
2006:O
Italian:event-sportsevent
Grand:event-sportsevent
Prix:event-sportsevent
,:O
Michael:person-athlete
Schumacher:person-athlete
announced:O
his:O
retirement:O
from:O
Formula:organization-sportsleague
1:organization-sportsleague
racing:organization-sportsleague
at:O
the:O
end:O
of:O
the:O
2006:O
season:O
.:O