With no explanation, label each line with "location-GPE", "O", "location-bodiesofwater", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Marico
River
or
Madikwe
is
a
river
in
Southern
Africa
.
The:O
Marico:location-bodiesofwater
River:location-bodiesofwater
or:O
Madikwe:location-bodiesofwater
is:O
a:O
river:O
in:O
Southern:location-GPE
Africa:location-GPE
.:O