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 ":".
Later
,
he
led
a
division
in
the
Battle
of
the
Ebro
.
Later:O
,:O
he:O
led:O
a:O
division:O
in:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
the:event-attack/battle/war/militaryconflict
Ebro:event-attack/battle/war/militaryconflict
.:O