With no explanation, label each line with "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
He
was
a
flying
ace
during
the
Korean
War
,
with
9
victories
.
He:O
was:O
a:O
flying:O
ace:O
during:O
the:O
Korean:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
,:O
with:O
9:O
victories:O
.:O