With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
United
States
used
herbicides
in
Southeast
Asia
during
the
Vietnam
War
.
The:O
United:location-GPE
States:location-GPE
used:O
herbicides:O
in:O
Southeast:location-GPE
Asia:location-GPE
during:O
the:O
Vietnam:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
.:O