With no explanation, label each line with "O", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
In
June
1941
he
went
to
Headquarters
Army
Air
Force
,
first
in
organization
and
equipment
and
then
as
executive
officer
to
the
assistant
chief
of
staff
for
operations
,
with
advancement
to
lieutenant
colonel
.
In:O
June:O
1941:O
he:O
went:O
to:O
Headquarters:organization-other
Army:organization-other
Air:organization-other
Force:organization-other
,:O
first:O
in:O
organization:O
and:O
equipment:O
and:O
then:O
as:O
executive:O
officer:O
to:O
the:O
assistant:O
chief:O
of:O
staff:O
for:O
operations:O
,:O
with:O
advancement:O
to:O
lieutenant:O
colonel:O
.:O