With no explanation, label each line with "O", "person-athlete", "event-sportsevent", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Three
weeks
later
,
Brian
Boru
finished
fourth
of
the
nine
runners
behind
Alamshar
and
Dalakhani
in
the
Irish
Derby
.
Three:O
weeks:O
later:O
,:O
Brian:O
Boru:O
finished:O
fourth:O
of:O
the:O
nine:O
runners:O
behind:O
Alamshar:person-athlete
and:O
Dalakhani:person-athlete
in:O
the:O
Irish:event-sportsevent
Derby:event-sportsevent
.:O