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 ":".
The
river
drops
down
from
each
Roraima
plateau
through
three
steep
sided
canyons
with
many
picturesque
sets
of
falls
.
The:O
river:O
drops:O
down:O
from:O
each:O
Roraima:location-GPE
plateau:O
through:O
three:O
steep:O
sided:O
canyons:O
with:O
many:O
picturesque:O
sets:O
of:O
falls:O
.:O