With no explanation, label each line with "location-GPE", "O", "building-airport", "organization-company", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting" or "art-writtenart" preceded by ":".
The
following
year
Maersk
Air
introduced
flights
to
Billund
Airport
in
Denmark
.
The:O
following:O
year:O
Maersk:organization-company
Air:organization-company
introduced:O
flights:O
to:O
Billund:building-airport
Airport:building-airport
in:O
Denmark:location-GPE
.:O