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 ":".
Flights
to
and
from
Denmark
were
cancelled
,
with
Billund
Airport
,
Aalborg
Airport
and
Copenhagen
Airport
all
closed
.
Flights:O
to:O
and:O
from:O
Denmark:location-GPE
were:O
cancelled:O
,:O
with:O
Billund:building-airport
Airport:building-airport
,:O
Aalborg:building-airport
Airport:building-airport
and:O
Copenhagen:building-airport
Airport:building-airport
all:O
closed:O
.:O