With no explanation, label each line with "location-GPE", "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
China
National
Aviation
Holding
Corporation
Limited
also
known
as
Air
China
Group
is
a
Chinese
state-owned
enterprise
which
is
the
parent
company
of
Air
China
and
Air
Macau
.
China:organization-company
National:organization-company
Aviation:organization-company
Holding:organization-company
Corporation:organization-company
Limited:organization-company
also:O
known:O
as:O
Air:organization-company
China:organization-company
Group:organization-company
is:O
a:O
Chinese:location-GPE
state-owned:O
enterprise:O
which:O
is:O
the:O
parent:O
company:O
of:O
Air:organization-company
China:organization-company
and:O
Air:organization-company
Macau:organization-company
.:O