With no explanation, label each line with "location-GPE", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart", "building-airport" or "building-hospital" preceded by ":".
Most
of
the
passengers
were
Dutch
citizens
returning
from
holiday
in
South
Africa
.
Most:O
of:O
the:O
passengers:O
were:O
Dutch:location-GPE
citizens:O
returning:O
from:O
holiday:O
in:O
South:location-GPE
Africa:location-GPE
.:O