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 ":".
Donaire
knocked
Mathebula
down
in
round
four
,
breaking
his
jaw
in
two
places
.
Donaire:person-athlete
knocked:O
Mathebula:person-athlete
down:O
in:O
round:O
four:O
,:O
breaking:O
his:O
jaw:O
in:O
two:O
places:O
.:O