With no explanation, label each line with "product-airplane", "O", "location-GPE", "organization-education", "person-other", "art-broadcastprogram", "art-film", "art-music", "art-other" or "art-painting" preceded by ":".
After
the
German
invasion
of
the
Soviet
Union
in
1941
she
volunteered
to
join
a
women
's
aviation
regiment
founded
by
Marina
Raskova
and
underwent
training
to
fly
Yakovlev
Yak-1
fighters
at
Engels
military
Aviation
School
.
After:O
the:O
German:location-GPE
invasion:O
of:O
the:O
Soviet:location-GPE
Union:location-GPE
in:O
1941:O
she:O
volunteered:O
to:O
join:O
a:O
women:O
's:O
aviation:O
regiment:O
founded:O
by:O
Marina:person-other
Raskova:person-other
and:O
underwent:O
training:O
to:O
fly:O
Yakovlev:product-airplane
Yak-1:product-airplane
fighters:product-airplane
at:O
Engels:organization-education
military:organization-education
Aviation:organization-education
School:organization-education
.:O