With no explanation, label each line with "person-athlete", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Buster
Sexton
was
black
flagged
during
this
race
and
was
eventually
disqualified
on
the
ninth
lap
of
the
race
.
Buster:person-athlete
Sexton:person-athlete
was:O
black:O
flagged:O
during:O
this:O
race:O
and:O
was:O
eventually:O
disqualified:O
on:O
the:O
ninth:O
lap:O
of:O
the:O
race:O
.:O