With no explanation, label each line with "O", "organization-government/governmentagency", "person-politician", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
However
,
it
was
not
until
1965
when
Sir
Frederick
Scherger
became
Chairman
of
the
Australian
Chiefs
of
Staff
Committee
,
and
was
promoted
to
air
chief
marshal
that
an
RAAF
officer
attained
the
rank
.
However:O
,:O
it:O
was:O
not:O
until:O
1965:O
when:O
Sir:O
Frederick:person-politician
Scherger:person-politician
became:O
Chairman:O
of:O
the:O
Australian:organization-government/governmentagency
Chiefs:organization-government/governmentagency
of:organization-government/governmentagency
Staff:organization-government/governmentagency
Committee:organization-government/governmentagency
,:O
and:O
was:O
promoted:O
to:O
air:O
chief:O
marshal:O
that:O
an:O
RAAF:organization-government/governmentagency
officer:O
attained:O
the:O
rank:O
.:O