With no explanation, label each line with "location-GPE", "O", "building-airport", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-hospital" preceded by ":".
Mariscal
Sucre
International
Airport
(
)
was
the
main
international
airport
serving
Quito
,
Pichincha
Province
,
Ecuador
.
Mariscal:building-airport
Sucre:building-airport
International:building-airport
Airport:building-airport
(:O
):O
was:O
the:O
main:O
international:O
airport:O
serving:O
Quito:location-GPE
,:O
Pichincha:location-GPE
Province:location-GPE
,:O
Ecuador:location-GPE
.:O