With no explanation, label each line with "person-athlete", "event-sportsevent", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Gregg
retracted
his
retirement
and
won
the
24
Hours
of
Daytona
three
more
times
,
in
1975
,
1976
,
and
1978
.
Gregg:person-athlete
retracted:O
his:O
retirement:O
and:O
won:O
the:O
24:O
Hours:O
of:O
Daytona:event-sportsevent
three:O
more:O
times:O
,:O
in:O
1975:O
,:O
1976:O
,:O
and:O
1978:O
.:O