With no explanation, label each line with "O", "person-athlete", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
The
highlight
of
Wilson
's
career
came
when
he
captured
the
world
middleweight
championship
by
defeating
Mike
O'Dowd
by
decision
over
12
rounds
on
May
6
,
1920
.
The:O
highlight:O
of:O
Wilson:person-athlete
's:O
career:O
came:O
when:O
he:O
captured:O
the:O
world:O
middleweight:O
championship:O
by:O
defeating:O
Mike:person-athlete
O'Dowd:person-athlete
by:O
decision:O
over:O
12:O
rounds:O
on:O
May:O
6:O
,:O
1920:O
.:O