With no explanation, label each line with "organization-other", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
During
the
Civil
War
,
he
served
in
the
5th
Virginia
Cavalry
.
During:O
the:O
Civil:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
,:O
he:O
served:O
in:O
the:O
5th:organization-other
Virginia:organization-other
Cavalry:organization-other
.:O