With no explanation, label each line with "event-attack/battle/war/militaryconflict", "O", "product-weapon", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
Matsushima
Naval
Air
Group
was
a
shore-based
unit
equipped
with
Mitsubishi
G3M
and
Mitsubishi
G4M
bombers
and
,
participated
in
the
Battle
of
Okinawa
during
World
War
II
.
The:O
Matsushima:organization-other
Naval:organization-other
Air:organization-other
Group:organization-other
was:O
a:O
shore-based:O
unit:O
equipped:O
with:O
Mitsubishi:product-weapon
G3M:product-weapon
and:O
Mitsubishi:product-weapon
G4M:product-weapon
bombers:O
and:O
,:O
participated:O
in:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Okinawa:event-attack/battle/war/militaryconflict
during:O
World:event-attack/battle/war/militaryconflict
War:event-attack/battle/war/militaryconflict
II:event-attack/battle/war/militaryconflict
.:O