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
town
is
located
20
km
south
of
Nueva
Gerona
,
the
island
's
seat
and
main
town
.
The:O
town:O
is:O
located:O
20:O
km:O
south:O
of:O
Nueva:location-GPE
Gerona:location-GPE
,:O
the:O
island:O
's:O
seat:O
and:O
main:O
town:O
.:O