With no explanation, label each line with "product-airplane", "O", "event-attack/battle/war/militaryconflict", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
In
1991
,
both
AAI
RQ-2
Pioneer
and
AeroVironment
FQM-151
Pointer
drones
were
used
for
surveillance
during
the
Gulf
War
.
In:O
1991:O
,:O
both:O
AAI:product-airplane
RQ-2:product-airplane
Pioneer:product-airplane
and:O
AeroVironment:product-airplane
FQM-151:product-airplane
Pointer:product-airplane
drones:O
were:O
used:O
for:O
surveillance:O
during:O
the:O
Gulf:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
.:O