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 ":".
The
combined
force
advanced
along
the
Grand
Trunk
road
towards
Delhi
.
The:O
combined:O
force:O
advanced:O
along:O
the:O
Grand:location-road/railway/highway/transit
Trunk:location-road/railway/highway/transit
road:O
towards:O
Delhi:location-GPE
.:O