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 ":".
West
African
gold
is
not
as
high
grade
as
gold
from
South
Africa
.
West:location-GPE
African:location-GPE
gold:O
is:O
not:O
as:O
high:O
grade:O
as:O
gold:O
from:O
South:location-GPE
Africa:location-GPE
.:O