With no explanation, label each line with "O", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
It
is
operated
by
Aeropuertos
y
Servicios
Auxiliares
,
a
federal
government-owned
corporation
.
It:O
is:O
operated:O
by:O
Aeropuertos:organization-company
y:organization-company
Servicios:organization-company
Auxiliares:organization-company
,:O
a:O
federal:O
government-owned:O
corporation:O
.:O