With no explanation, label each line with "location-GPE", "person-soldier", "O", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
The
Acarnanians
appealed
to
Phormio
for
help
,
but
he
refused
to
leave
Naupactus
undefended
.
The:O
Acarnanians:O
appealed:O
to:O
Phormio:person-soldier
for:O
help:O
,:O
but:O
he:O
refused:O
to:O
leave:O
Naupactus:location-GPE
undefended:O
.:O