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
Marine
Corps
served
in
the
Vietnam
War
taking
part
in
such
battles
as
the
Battle
of
Hue
and
the
Battle
of
Khe
Sanh
in
1968
.
The:O
Marine:O
Corps:O
served:O
in:O
the:O
Vietnam:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
taking:O
part:O
in:O
such:O
battles:O
as:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Hue:event-attack/battle/war/militaryconflict
and:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Khe:event-attack/battle/war/militaryconflict
Sanh:event-attack/battle/war/militaryconflict
in:O
1968:O
.:O