With no explanation, label each line with "location-GPE", "O", "organization-company", "organization-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
state
carrier
,
Air
Koryo
,
joined
the
International
Air
Transport
Association
(
IATA
)
in
the
late
1990s
,
and
North
Korea
has
proclaimed
a
program
to
upgrade
several
airports
to
international
standards
.
The:O
state:O
carrier:O
,:O
Air:organization-company
Koryo:organization-company
,:O
joined:O
the:O
International:organization-other
Air:organization-other
Transport:organization-other
Association:organization-other
(:O
IATA:organization-other
):O
in:O
the:O
late:O
1990s:O
,:O
and:O
North:O
Korea:location-GPE
has:O
proclaimed:O
a:O
program:O
to:O
upgrade:O
several:O
airports:O
to:O
international:O
standards:O
.:O