With no explanation, label each line with "product-airplane", "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
92
Squadron
RAF
flying
the
Spitfire
on
3
March
1941
and
on
4
September
1941
probably
shot
down
a
Messerschmitt
Bf
109
in
combat
.
92:O
Squadron:O
RAF:O
flying:O
the:O
Spitfire:product-airplane
on:O
3:O
March:O
1941:O
and:O
on:O
4:O
September:O
1941:O
probably:O
shot:O
down:O
a:O
Messerschmitt:organization-other
Bf:product-airplane
109:product-airplane
in:O
combat:O
.:O