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 ":".
de
C.V.
(
)
is
a
publicly
traded
airline
holding
company
headquartered
in
Mexico
City
,
GAM
owns
and
operates
Aeromexico
and
is
the
principal
airline
of
Mexico
.
de:O
C.V.:O
(:O
):O
is:O
a:O
publicly:O
traded:O
airline:O
holding:O
company:O
headquartered:O
in:O
Mexico:location-GPE
City:location-GPE
,:O
GAM:organization-company
owns:O
and:O
operates:O
Aeromexico:organization-company
and:O
is:O
the:O
principal:O
airline:O
of:O
Mexico:location-GPE
.:O