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 ":".
The
onset
of
World
War
II
reduced
the
sales
,
resulting
in
its
demise
.
The:O
onset:O
of:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
II:event-attack/battle/war/militaryconflict
reduced:O
the:O
sales:O
,:O
resulting:O
in:O
its:O
demise:O
.:O