With no explanation, label each line with "location-GPE", "O", "location-other", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Yacyretá
Dam
and
the
Itaipu
Dam
on
the
Paraguay
border
have
made
the
small
,
largely
undeveloped
nation
of
Paraguay
the
world
's
largest
exporter
of
hydroelectric
power
.
The:O
Yacyretá:location-other
Dam:location-other
and:O
the:O
Itaipu:location-other
Dam:location-other
on:O
the:O
Paraguay:location-GPE
border:O
have:O
made:O
the:O
small:O
,:O
largely:O
undeveloped:O
nation:O
of:O
Paraguay:location-GPE
the:O
world:O
's:O
largest:O
exporter:O
of:O
hydroelectric:O
power:O
.:O