With no explanation, label each line with "O", "person-artist/author", "organization-government/governmentagency", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
His
former
employer
,
the
U.
S.
State
Department
,
claimed
van
Buren
had
not
properly
cleared
his
book
for
publication
under
Department
rules
,
and
that
the
book
contained
unauthorized
disclosures
of
classified
material
.
His:O
former:O
employer:O
,:O
the:O
U.:organization-government/governmentagency
S.:organization-government/governmentagency
State:organization-government/governmentagency
Department:organization-government/governmentagency
,:O
claimed:O
van:person-artist/author
Buren:person-artist/author
had:O
not:O
properly:O
cleared:O
his:O
book:O
for:O
publication:O
under:O
Department:organization-government/governmentagency
rules:O
,:O
and:O
that:O
the:O
book:O
contained:O
unauthorized:O
disclosures:O
of:O
classified:O
material:O
.:O