With no explanation, label each line with "location-GPE", "O", "event-attack/battle/war/militaryconflict", "product-airplane", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
Battle
of
Britain
:
shows
the
German
Junkers
Ju
87
Stuka
and
Heinkel
He
111
bombers
which
were
types
used
during
the
Battle
of
Britain
.
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Britain:event-attack/battle/war/militaryconflict
::O
shows:O
the:O
German:location-GPE
Junkers:O
Ju:product-airplane
87:product-airplane
Stuka:product-airplane
and:O
Heinkel:product-airplane
He:product-airplane
111:product-airplane
bombers:product-airplane
which:O
were:O
types:O
used:O
during:O
the:O
Battle:event-attack/battle/war/militaryconflict
of:event-attack/battle/war/militaryconflict
Britain:event-attack/battle/war/militaryconflict
.:O