With no explanation, label each line with "O", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Ozawa
had
anti-aircraft
guns
but
lacked
proximity
fuzes
and
good
radar
.
Ozawa:person-other
had:O
anti-aircraft:O
guns:O
but:O
lacked:O
proximity:O
fuzes:O
and:O
good:O
radar:O
.:O