With no explanation, label each line with "location-GPE", "O", "location-road/railway/highway/transit", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Buna
was
the
trailhead
to
the
Kokoda
Track
leading
to
Kokoda
.
Buna:location-GPE
was:O
the:O
trailhead:O
to:O
the:O
Kokoda:location-road/railway/highway/transit
Track:location-road/railway/highway/transit
leading:O
to:O
Kokoda:location-GPE
.:O